Question # 1

The total numebr of electrons which M shell can accommodate

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2

8

18

32

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

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Nucleus

Neutrons

Proton

Atom

The mass of an atom is almost due to the.

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Electron

Proton

Nucleus

Neutrons

The negetively charged particle arod nucleus are called.

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Electron

Proton

Atom

Neutron

Element present in grops have same number of ....... in their outermost shell.

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Electron

Proton

Atoms

Neutron

Formula showing maximum number of electrons in a shell.

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n2

2n2

3n2

4n2

Positively charged particle of an atom is called.

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Electron

Proton

Atom

Neutron

--------------- are fundamental particles of an atom.

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Electron

Proton

Neutron

All of these

The elements of group 18 are called.

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Alkali metals

Noble gases

Alkaline metals

Transition metals

Area around nucleus where electrons are found are called.

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Orbit

Shell

Both a and b

None of these

The particle of an atom having negative charge on it.

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Electron

Proton

Neutron

Nucleus

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

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Group

Period

Orbit

Shell

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Science 7th Class English Medium Chapter 4 Online Test MCQs With Answers

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