HARD
9th Tamil Nadu Board
IMPORTANT
Earn 100

Draw the structures of the isotopes of oxygen O16 and O18.

Atomic number of oxygen =8.

Important Questions on Atomic Structure

HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>activity 5>Q (i)
Draw the model of the pair of isotones of Fluorine and Neon.
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>activity 5>Q (ii)
Draw the model of the pair of isotones of Sodium and Magnesium.
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>activity 5>Q (iii)
Draw the model of the pair of isotones of Aluminium and Silicon.
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>activity 6>Q 1
Nitrogen combines with hydrogen to form ammonia NH3. Illustrate Gay Lussac's law using this example.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q i
Among the following, the odd pair is 
EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q i
The term nucleons refer to
EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q i
The correct electronic configuration of potassium is 
EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q ii

State whether true or false. If false, correct the statement.

In an atom, electrons revolve around the nucleus in fixed orbits.