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MCQ Chemistry

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MCQ Elements SET 5

ALL MCQ For Elements

1. A metal may have atomic number

85

2

32

38

Question 1 of 15

2. IV Period has.........elements.

18

9

36

8

Question 2 of 15

3. An element has atomic number 2. It belongs to

O group

II B group

VI group

III A group

Question 3 of 15

4. Ionisation energy is the amount of energy required to remove

the most loosely bound electron from an isolated gaseous atom

an electron from covalently bonded atom in a molecule

an electron from an atom of an element

an electron from an isolated gaseous atom

Question 4 of 15

5. Which of the following atoms is paramagnetic?

Zn

Ca

Sr

N

Question 5 of 15

6. With the increase in atomic number in a period of the periodic table

electron affinity decreases

atomic mass decreases

ionisation energy decreases

metallic character decreases

Question 6 of 15

7. Which of the following conform both cation and anion?

I

K

F

Cl

Question 7 of 15

8. What is the special name given to the 17th group?

chalcogens

inert gases

halogens

alkali metals

Question 8 of 15

9. Atomic mass is equal to the sum of ____.

P+E

Number of neutrons

Number of Protons

P+N

Question 9 of 15

10. Upto which element, the law of octaves was found to be applicable –

Oxygen

Cobalt

Potassium

Calcium

Question 10 of 15

11. What relation do Ar and Ca have?

isotopes

isobars

isotones

isoelectronic

Question 11 of 15

12. On which factor does ionisation energy depend?

Size of an atom

electronic configuration

nuclear charge

all

Question 12 of 15

13. Which is biggest in size –

Lithium

potassium

sodium

Magnesium

Question 13 of 15

14. Which of the given elements A,B,C,D and E with atomic numbers 2,3,7,10 and 30 belong to the same period?

A,B,C

B,D,E

A,D,E

B,C,D

Question 14 of 15

15. Which one will have the maximum number of valence electrons ?

Na

Si

P

Al

Question 15 of 15

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