HARD
9th Tamil Nadu Board
IMPORTANT
Earn 100

What is the same about the electron structures of Lithium, Sodium and Potassium?

Important Questions on Atomic Structure

HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q vi
What is the same about the electron structures of Beryllium, Magnesium and Calcium?
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q vii
How was it shown that atom has empty space?
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q vii
Why do Cl1735 and Cl1737 have the same chemical properties? In what respect do these atoms differ?
HARD
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 11 - Atomic Structure>textbook exercises>Q vii
Draw the structure of oxygen and sulphur atoms.
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?