Question # 1

The negetively charged particle arod nucleus are called.

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Electron

Proton

Atom

Neutron

The total numebr of electrons which M shell can accommodate

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2

8

18

32

The central part of an atom is called.

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Electron

Proton

Neutron

Nucleus

The charge present on atom is

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Positive

Negative

Both a and b

Neutral

The numebr of electorns present in an atom s equal to number of.

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Nucleus

Neutrons

Proton

Atom

In .... elements are arranged in order of increasing atomic numbers.

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Group

Period

Orbit

Shell

The mass of an atom is almost due to the.

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Electron

Proton

Nucleus

Neutrons

Letter K is used to express theshell around the nucleus of an atom.

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1st

2nd

3rd

4th

Positively charged particle of an atom is called.

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Electron

Proton

Atom

Neutron

The elements of group 18 are called.

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Alkali metals

Noble gases

Alkaline metals

Transition metals

The particle of an atom having negative charge on it.

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Electron

Proton

Neutron

Nucleus

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