1.
Chloride ion has number of protons

2.
Smaller particles in an atom are called

3.
Chemical symbol represents

4.
The number of protons in a 'carbon' atom is

5.
A modern model of an atom shows that electrons are present outside nucleus in the region of high

6.
"O3" is a chemical formula of

7.
Ammonia molecule contains one nitrogen atom and three atoms of

8.
As compare to hydrogen atom, helium atom is

9.
The major part of an atom is

10.
Rutherford's Model explains that atom has a nucleus which is surrounded by

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