HARD
9th Tamil Nadu Board
IMPORTANT
Earn 100

Draw the structure of oxygen and sulphur atoms.

Important Questions on Atomic Structure

EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q i
Change in the number of neutrons in an atom changes it to 
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q i
The number of protons, neutrons and electrons present respectively in Br3580 are
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q vii
Calculate the number of neutrons, protons and electrons of the element with atomic number 3 and mass number 7.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q vii
Calculate the number of neutrons, protons and electrons of the element with atomic number 92 and mass number 238 .
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q vii
What are nucleons? How many nucleons are present in Phosphorous? Draw its structure.
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q viii
What conclusions were made from the observations of Gold foil experiment?
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q viii
Explain the postulates of Bohr’s atomic model.
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q viii
State the Gay Lussac’s law of combining volumes. Explain with an illustration.