Question # 1

Atomic number of actinium is

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57

60

89

80

How many blocks are presnt in modern periodic table

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2

3

4

5

How many elecntrons are present in the valence shell of group 1 elements.

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1

2

3

4

The unit of ionization energy is

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nm and pm

kJ mol-1

Pascal

Newton

Which of the following is a metal

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Magnesium

Carbon

Hydrogen

Nitrogen

How many elements are present in 6th period.

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2

8

18

32

How many groups are present in the modern periodic table.

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8

10

15

18

Which of the following elemens is presnet in 1st period.

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Hydrogen

Helium

Both a and b

None of these

Which one of the followign halogns has highest electronegativity

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Iodine

Fluorine

Chlorine

Bromine

Which halogen memebr exists in a liquid stte at room temperature

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Bromine

Chlorine

Fluroine

Iodine

The horizontal lines present in the priodic table are called.

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Groups

Periods

Both a and b

None of these

The vertical columns present in the priodic table are called.

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Group

Period

Both a and b

None of these

How many electrons can nitrogen accept in its outermost shell.

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2

3

4

5

Which element is the most reactive element?

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Florine

Oxygen

Chlorine

Nitrogen

Main group elements are arranged in ..............groups.

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7

6

8

10

17th group elements ae known as

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Alkaki metals

Alkaline earth metals

Noble gases

Halogens

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