EASY
9th CBSE
IMPORTANT
Earn 100

Atomic number of chlorine is . What will be the atomic number of chloride ion ?
(a)
(b)
(c)
(d)

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Important Questions on Structure of Atom
EASY
9th CBSE
IMPORTANT
What do you mean by valence electrons?

EASY
9th CBSE
IMPORTANT
What is the maximum number of electrons that can be present in M shell of an atom?

EASY
9th CBSE
IMPORTANT
What are isobars?

EASY
9th CBSE
IMPORTANT
How do we find the age of fossils i.e, the sample of woods or dead animals?

EASY
9th CBSE
IMPORTANT
If an element has electrons in the outermost M shell, what element is this?

EASY
9th CBSE
IMPORTANT
Covalency is the number of electrons:

EASY
9th CBSE
IMPORTANT
Why helium does not take part in chemical reaction?

EASY
9th CBSE
IMPORTANT
What are Radioisotopes?
