Define representative elements.

Important Questions on Periodic Classification of Elements

EASY

10th CBSE

IMPORTANT

Foundation Science Chemistry FOR CLASS 10>Chapter 1 - Periodic Classification of Elements>EXERCISES>Q 5

Define transition elements.

EASY

10th CBSE

IMPORTANT

Foundation Science Chemistry FOR CLASS 10>Chapter 1 - Periodic Classification of Elements>EXERCISES>Q 5

Define lanthanides.

EASY

10th CBSE

IMPORTANT

Foundation Science Chemistry FOR CLASS 10>Chapter 1 - Periodic Classification of Elements>EXERCISES>Q 5

Define actinides.

MEDIUM

10th CBSE

IMPORTANT

Foundation Science Chemistry FOR CLASS 10>Chapter 1 - Periodic Classification of Elements>EXERCISES>Q 6

State how atomic size varies from left to right in a period and from top to bottom in a group.

MEDIUM

10th CBSE

IMPORTANT

Foundation Science Chemistry FOR CLASS 10>Chapter 1 - Periodic Classification of Elements>EXERCISES>Q 7

What is the basic difference between Mendeleev’s periodic table and the modern periodic table?

MEDIUM

10th CBSE

IMPORTANT

Foundation Science Chemistry FOR CLASS 10>Chapter 1 - Periodic Classification of Elements>EXERCISES>Q 8

How have the shortcomings of Mendeleev’s periodic table been overcome in the modern periodic table?

EASY

10th CBSE

IMPORTANT

Foundation Science Chemistry FOR CLASS 10>Chapter 1 - Periodic Classification of Elements>EXERCISES>Q 9

Describe the merits of Mendeleev’s periodic table.

MEDIUM

10th CBSE

IMPORTANT

Foundation Science Chemistry FOR CLASS 10>Chapter 1 - Periodic Classification of Elements>EXERCISES>Q 10

Write the electronic structures of the atoms of (a) potassium, (b) lithium, (c) fluorine and (d) chlorine. Use these electronic structures to explain why potassium is more reactive than lithium, and fluorine more reactive than chlorine.