EASY
9th CBSE
IMPORTANT
Earn 100

Helium atom has an atomic mass of 4u and two protons in its nucleus. How many neutrons does it have?

Important Questions on Structure of the Atom

MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 4 - Structure of the Atom>Questions>Q 1
Write the distribution of electrons in Carbon and Sodium atoms.
EASY
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 4 - Structure of the Atom>Questions>Q 2
If K and L shell of an atom is full, then what would be the total number of electrons in the atom?
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 4 - Structure of the Atom>Questions>Q 1
How will you find the valency of chlorine, sulphur and magnesium?
EASY
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 4 - Structure of the Atom>Questions>Q 1
If number of electrons in an atom is 8 and number of protons is also 8, then what is the atomic number of the atom? 
EASY
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 4 - Structure of the Atom>Questions>Q 1
If number of electrons in an atom is 8 and number of protons is also 8, then what is the charge on the atom?
EASY
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 4 - Structure of the Atom>Questions>Q 2

With the help of below table, find out the mass number of oxygen and sulphur atom.

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MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 4 - Structure of the Atom>Questions>Q 1
For the symbol H, D and T tabulate three subatomic particles found in each of them.
MEDIUM
9th CBSE
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS IX>Chapter 4 - Structure of the Atom>Questions>Q 2
Write the electronic configuration of any one pair of isotopes and isobars.