Chemistry Periodic Classification Of Elements & Periodicity Online Test

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Question 1

1. The element with atomic number 14 belongs to

Answer

3rd period

Answer

2nd period

Answer

4th period

Answer

5th period

Question 2

2. The electronegativity of Si is

Question 3

3. IN the light of Mendeleev’s periodic law,. the properties of elements are periodic function of their

Answer

Atomic numbers

Answer

Atomic masses

Question 4

4. The atomic radii decreases by increasing atomic number in

Answer

Alkali metal

Answer

Alkaline earth metal

Answer

Elements from Li to Ne

Question 5

5. Elements whose outer electronic configuration vary from ns²np¹ to ns¹np⁶ constitute

Answer

p – block elements

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d – block elements

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s – block elements

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f – block elements

Question 6

6. The attempt of classification of elements by plotting the atomic weight of elements against their volumes was made

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Dobereiner

Answer

Lother Meyer

Question 7

7. The element with atomic number 26 will be found in group

Question 8

8. Mark the correct statement

Answer

Na⁺ is smaller than Na atom

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Cl⁺ (ions are equal in size)

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Na⁺ is larger than Na atom

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Cl⁺ is smaller than Cl atom

Question 9

9. Which one is the strongest reducing agent?

Question 10

10. Which of the following statements is most appropriate about effective nuclear charge? It depends upon?

Answer

The atomic number

Answer

The charge on the nucleus

Answer

Both the nuclear charge and the shielding constant

Answer

The shielding constant

Question 11

11. Which of the p-block elements are not representative elements?

Answer

Halogens (VII-A)

Answer

Alkali metals (I-A)

Answer

Group-14 elements (IV-A)

Answer

Group-18 elements (VIII-A)

Question 12

12. Which order of ionization energy is correct?

Answer

Both b & c

Question 13

13. Elements in the same vertical group of the periodic table have same

Answer

Atomic volume

Answer

Number of valence electrons

Answer

Atomic mass

Answer

Atomic number

Question 14

14. Which discovery caused a revision in periodic law as predicted by Mendeleev?

Answer

Location of nucleus by Rutherford

Answer

Henry Becquerel’s natural radioactivity

Answer

x-rays by Roentgen

Answer

Atomic number by Moseley

Question 15

15. Which of the following groups of period table has entirely metals?

Question 16

16. Higher value of electron affinity means

Answer

The reason is unknown

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Atom may form di-positive ion

Answer

Atom will gain electron easily

Answer

Atom will lose electron easily

Question 17

17. Mark the correct statement

Answer

Melting point of halogens first increase and then decrease down the group

Answer

Melting points of halogens decrease down the group

Answer

Melting points of halogens remains the same throughout the group

Answer

Melting points of halogens increases down the group

Question 18

18. Which of the following has greatest tendency lose electron?

Question 19

19. The periodic table consists of

Answer

8 horizontal and 18 vertical series

Answer

7 horizontal and 18 vertical series

Answer

7 horizontal and 7 vertical series

Answer

8 horizontal and 7 vertical series

Question 20

20. Which element was not known when Mendeleev proposed his classification?

Question 21

21. The atoms of same element having same atomic number bit different mass number are called

Question 22

22. Modern periodic table has been divided in __________ block.

Question 23

23. Which of the following possess maximum hydration power?

Question 24

24. Which of these Period 3 elements have highest electronegativity?

Question 25

25. Elements with similar chemical properties appear in 1 the

Answer

Right upper corner

Answer

Same family

Answer

Same period

Answer

p block elements

Question 26

26. The element with highest first ionization energy is

Question 27

27. Metals form halides which are

Question 28

28. Which among the following elements have lowest value of IE₁?

Question 29

29. Which has largest first ionization energy?

Question 30

30. Which one is more acidic?

Question 31

31. Inner transition elements are called

Answer

Rare earth metals

Answer

Lanthanides

Question 32

32. The correct arrangement of increasing order of atomic radius among Na, K, Mg, Rb is

Answer

Mg < K < Na < Rb

Answer

Na < K < Rb < Mg

Answer

Mg < Na < K < Rb

Answer

Mg < Na < Rb < K

Question 33

33. Which of the following set consist of all coinage metals?

Answer

Ag, Au, Hg

Answer

Cu, Fe, Au

Answer

Cu, Hg, Au

Answer

Cu, Ag, Au

Question 34

34. Which set of elements is listed in order of increasing ionization energy?

Answer

Sb < As < Cl < S < P

Answer

As < Cl < P < S < Sb

Answer

Sb < As < S < P < Cl

Answer

Cl < Sb < P < As < S

Question 35

35. The attraction that an atom exerts on a pair of electrons that are being shared with another atom for forming covalent bond is referred to as its

Answer

Electronegativity

Answer

Ionization energy

Answer

Electron affinity

Question 36

36. Which of the following metal requires radiation of highest frequency to cause emission of electrons?

Question 37

37. Mark the correct statement

Answer

All the alkali metals are present in the same period

Answer

All halogens are present in the same period

Answer

All the noble gases are present in the same period

Answer

All lanthanides are present in the same group

Question 38

38. Many of the properties of elements and its compounds can be predicted from the position of element in the periodic table. Which property cannot be predicted?

Answer

Charge on its ions

Answer

The number of isotopes it has

Answer

Acidic or basic nature of oxides

Answer

The formula of its oxides

Question 39

39. The valence shell electronic stricture of an element is ns²np⁵. The element will belong to the group of

Answer

Alkali metals

Answer

Inert metals

Answer

Noble gases

Question 40

40. Which of the following groups may contain a metalloid?

Question 41

41. Oxidation state of an atom represent

Answer

Number of electrons lost

Answer

Its vacancies

Answer

Number of electrons gained

Answer

Apparent charge I compound

Question 42

42. An element has electronic configuration 1s2 2s2 2p2. It belongs to

Answer

Group VII-A

Answer

Group VI-A

Answer

Group IV-A

Answer

Group II-A

Question 43

43. Which of the following has highest electropositive character?

Question 44

44. Californium is the member of

Answer

Lanthanide series

Answer

Actinide series

Answer

Alkali metals

Answer

Alkaline earth metals

Question 45

45. Which one has least ionization Potential?

Question 46

46. Magnesium keeps on burning in

Answer

N₂ as well as Co₂

Question 47

47. White enamel of our teeth is

Answer

Ca₃ (PO4)₂

Question 48

48. Number of elements present in the fifth period of periodic table is

Question 49

49. Inner transition elements are called

Answer

Rare earth metals

Answer

Lanthanides

Question 50

50. In modern periodic table all the elements are arranged in ascending order of

Answer

Valence electrons

Answer

Atomic mass

Answer

Atomic number

Question 51

51. Mark the Dobereiner triad

Answer

Zn, Cr, Na

Question 52

52. The discovery of which of the following group of elements give below to the Newland’s law of octaves?

Answer

Alkaline earths

Answer

Inert gases

Answer

Rare earths

Question 53

53. The electron affinity values (in kJ mol¯¹) of three halogens X, Y and Z are respectively – 349, -333 and -325. Then X, Y and Z respectively are:

Answer

F, Cl and Br

Answer

Br, Cl and F

Answer

Cl, Br and F

Answer

Cl, F and Br

Question 54

54. Which one of the following is not a periodic property?

Answer

Ionization energy of elements

Answer

BP of elements

Answer

MP of elements

Answer

Coordination number of icons

Question 55

55. Seventh period contains ____________ normal elements

Question 56

56. The property which increases up to the middle of the period and then decreases is

Answer

Atomic volume

Answer

Atomic radii

Answer

Ionization energy

Answer

m.P and B.P

Question 57

57. Which of the pairs belongs to the same group of periodic table?

Answer

Elements with atomic number 17 and 38

Answer

Elements with atomic number 11 and 33

Answer

Elements with atomic numbers 20 and 40

Answer

Elements with atomic number 17 and 53

Question 58

58. Hydrogen resembles with carbon because of having

Answer

Similar physical state

Answer

Homovalent (show same valency)

Answer

Remarkable reducing properties

Answer

Same number of electrons in the valence shell

Question 59

59. Which of the following elements is most electronegative?

Question 60

60. The highly electronegativity atom is

Question 61

61. Modern periodic table has been divided in _________ blocks.

Question 62

62. The valency of noble gases, in general, is

Question 63

63. The elements which behave as metalloid is:

Question 64

64. Elements were classified into groups of three called as trades by

Answer

Lother Meyer

Answer

Rutherford

Answer

Dobereiner

Answer 127

Both are electropositive

Answer 128

Similar outer most shell electronic configuration

Answer 129

Both form ionic compounds

Answer 130

The ionization energy of calcium is than that of beryllium

Answer 131

The ionization energy of calcium is lower than that of barium

Answer 132

The ionization energy of calcium is higher than that of magnesium

Answer 133

The ionization energy of calcium is lower than that of strontium

Answer 134

No regular trend

Answer 135

Decrease down the group

Answer 136

Increase down the group

Answer 137

Remain same

Answer 138

Alkali metal

Answer 139

Alkaline earth metal

Answer 140

Elements from Li to Ne

Answer 141

Alkali metals

Answer 142

Alkaline earth metals

Answer 143

Inert gases

Answer 144

Rare earth metals

Answer 145

s – block elements

Answer 146

d – block elements

Answer 147

p – block elements

Answer 148

f – block elements

Answer 149

No of e gained or/lost

Answer 150

No of e gained

Answer 151

No of e lost

Answer 152

Atomic radii

Answer 153

Atomic volume

Answer 154

Ionization energy

Answer 155

Melting & boiling points

Answer 156

Both are electropositive

Answer 157

Both are not found in free state

Answer 158

Similar electronic configuration

Answer 159

In spite of their different properties, alkali metals and coinage metals have been grouped together

Answer 160

Similar elements like Cu and Zn have been placed in different groups

Answer 161

All above statements are correct

Answer 162

K (at, wt.39.1) has been placed after argon (at, wt. 39.9)

Answer 163

Properties of their compounds

Answer 164

Chemical properties

Answer 165

Physical properties

Answer 166

Hydrogen resembles in properties with IA, IVA and VIIA elements

Answer 167

Hydrogen resembles in properties with IIA, IIIA and VIIIA elements

Answer 168

Hydrogen resembles in properties with IIA, IVA and VIA elements

Answer 169

Hydrogen resembles in properties with IIIA, IVA and VA elements

Answer 170

All of the above

Answer 171

Amphoteric

Answer 172

Transition elements

Answer 173

Metallic elements

Answer 174

Normal elements

Answer 175

None of these

Answer 176

Group VII A

Answer 177

Group VIII

Answer 178

All are stable

Answer 179

Smallest size

Answer 180

Highest electronegativity

Answer 181

Highest IE

Answer 182

Having completely filled valence shell

Answer 183

Zero group element

Answer 184

Data is insufficient

Answer 185

Endothermic

Answer 186

Exothermic

Answer 187

C O F Cl Br

Answer 188

F Cl Br O C

Answer 189

F O C Cl Br

Answer 190

F C O Cl Br

Answer 191

Ionization potential

Answer 192

Electronegativity

Answer 193

Neutron/proton ration

Answer 194

Bonding behavior

Answer 195

2nd and 3rd both

Answer 196

O– ion has comparatively larger size oxygen atom

Answer 197

Oxygen has high electron affinity

Answer 198

Oxygen is more electronegative

Answer 199

O– ion will tend to resist the addition of another electron

Answer 200

Remains constant

Answer 201

Cannot be predicted

Answer 202

Cr, In, Pb

Answer 203

Ca, Cr, Zn

Total Questions:	107
Time Allowed:	60 Minutes
Total Marks:	107
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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Important Periodic Classification Of Elements & Periodicity Question and Answer

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