🏫 Board🧪 Chemistry

Periodic Classification of Elements

4 Board Chemistry previous year questions on Periodic Classification of Elements — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.

Q1 FREE PREVIEW

Magnesium is a member of which proup of the periodic table?

a

Group VIII

b

Group I

c

Group II

d

Non-metallic element

✓ Correct answer: c)

Group II

Explanation

Magnesium (Mg) is a member of Group II of the periodic table.

Explanation:

  • Magnesium is an alkaline earth metal.

  • It belongs to Group 2 and Period 3 in the periodic table.

  • Other elements in this group include Be, Ca, Sr, Ba, Ra.

Q2

Who among the following propounded the laws of octave?

a

Mendeleev

b

Newlands

c

Lother Meyer

d

Dobereiner

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Q3

How many periods are there in the periodic table?

a

12

b

9

c

8

d

7

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Q4

Which was a defect of Mendeleev's periodic table ?

a

Not giving proper place to oxygen

b

Not giving proper place to Cl

c

Not giving proper place to hydrogen

d

None of these

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