MEDIUM
10th West Bengal Board
IMPORTANT
Earn 100

The number of valence electrons present in the halogen atom is 7.

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Important Questions on Ionic and Covalent Bonding

EASY
10th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 9 - Ionic and Covalent Bonding>EXERCISE>Q 6
The octet rule is not followed in PCl5.
MEDIUM
10th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 9 - Ionic and Covalent Bonding>EXERCISE>Q 7
Naphthalene is soluble in water.
EASY
10th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 9 - Ionic and Covalent Bonding>EXERCISE>Q 8
Ethylene molecule contains a double bond.
MEDIUM
10th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 9 - Ionic and Covalent Bonding>EXERCISE>Q 9
Electro valency of iron in ferric chloride is +3.
MEDIUM
10th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 9 - Ionic and Covalent Bonding>EXERCISE>Q 10
Water is polar but ammonia is non-polar.
EASY
10th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 9 - Ionic and Covalent Bonding>EXERCISE>Q 11
Both ammonia and carbon dioxide are polar. 
EASY
10th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 9 - Ionic and Covalent Bonding>EXERCISE>Q 12
Both carbon dioxide and methane are non-polar.
HARD
10th West Bengal Board
IMPORTANT
PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 9 - Ionic and Covalent Bonding>EXERCISE>Q 1
Explain the formation of oxygen molecule.