Define modern periodic law.

Important Questions on Periodic Classification of Elements

HARD

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 4

Give the demerits of Mendeleev's periodic table.

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 5

How does the electronic configuration of an atom relate to its position in the modern periodic table?

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 6

Write the triads formed by Dobereiner.

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 7

Give reasons:
Elements in a group of periodic table have similar chemical properties.

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 7

Give reasons:
Elements of group $18$ are called zerovalent.

HARD

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 8

An element $\mathrm{X}$ (atomic number $17$) reacts with an element $\mathrm{Y}$(atomic number $20$) to form a divalent halide. Identify the position of the elements $\mathrm{X}$ and $\mathrm{Y}$.

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 8

An element $\mathrm{X}$ (atomic number $17$) reacts with an element $\mathrm{Y}$ (atomic number $20$) to form a divalent halide. What will be the nature of oxide of element $\mathrm{Y}$?

MEDIUM

10th CBSE

IMPORTANT

Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>MOCK TEST - 1>Q 8

An element $\mathrm{X}$ (atomic number $17$) reacts with an element $\mathrm{Y}$ (atomic number $20$) to form a divalent halide. Identify the nature of bonding in the compound formed.