EASY
9th CBSE
IMPORTANT
Earn 100

Write the electronic configuration of chlorine atom (atomic number 17) and calculate the number of electrons in the outermost shell.

Important Questions on Structure of Atom

MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 2
Calculate the number of valence electrons in an atom whose atomic number is 16.
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 3

The nucleus of a neutral atom A has 7 protons. Write the electronic configuration of A.

MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 3
The nucleus of a neutral atom A has 7 protons.  What is its atomic number?
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 3
The nucleus of a neutral atom A has 7 protons.  Find the number of its valence electrons.
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 4
Magnesium (Z=12) is a metallic element. Find its valency.
HARD
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 5
An element X has three electrons in the outermost shell of its atom. State whether X is a metal or non-metal.
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 5
An element X has three electrons in the outermost shell of its atom. Write the symbol of its ion.
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 4 - Structure of Atom>Problems for Proficiency>Q 6
Define the octet rule.