Why modern periodic table is called Bohr's table?

Important Questions on Periodic Classification of Elements

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 3>Q 12

What are groups and periods?

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 3>Q 13

How many periods and groups are there in modern periodic table?

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 3>Q 14

What are representative elements?

HARD

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 3>Q 15

What are the names given to group $1,\mathrm{2,13,14,15},\mathrm{16,17}$ and $18$?

EASY

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 3>Q 16

What are transition elements?

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 3>Q 17

How many d-block elements are present in modern periodic table? $\left(40/ 62/ 118\right)$

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 3>Q 18

How elements are classified in the long form of periodic table?

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 3>Q 19

What is the zig-zag line running diagonally across the periodic table?