Question # 1

How many periods are there in the Periodic Table.

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Five

Six

Seven

Eight

Mass number of oxygen is

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6

16

26

36

Number of electron in the valence shell of elements of grop 16 is.

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3

6

8

16

Some metals can be pulled into wire This is because metals are.

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Ductile

Solid

Hard

Brilliant

An alkali metal

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F

Be

Al

Na

A non - metal

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Na

Li

H

Be

Na is symbol of.

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Neon

Nitrogen

Sodium

None of these

The basic particle of an element is called.

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Compound

Mixture

Atom

None of these

Number of elements in short period is.

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2

8

16

32

6th period in periodic table contains elements.

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2

8

16

32

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