EASY
9th CBSE
IMPORTANT
Earn 100

Define the octet rule.

Important Questions on Structure of Atom

MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 7
Mention the ways by which the atom completes their octet.
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 8
Atomic number of an element Y is 17. Write its electronic configuration and answer the following question: What is the number of valence electrons in Y?
HARD
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 8
Atomic number of an element Y is 17. Write its electronic configuration and answer the following question: Is it a metal or  non-metal?
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 8
Atomic number of an element Y is 17. Write its electronic configuration and answer the following question: What is the valency of Y?
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 8
Atomic number of an element Y is 17. Write its electronic configuration and answer the following question: How many electrons are needed to complete the octet of Y?
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 9

The outermost shell of an atom is called its _____.(Valence shell/Valence orbital)

EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 9
The valency of a noble gas is _____.(zero/eight)
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 9

The valency of magnesium (at. no. 12) is _____.