Question # 1

4th and 5th priod of the long form of periodic table are called.

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Short periods

Normal periods

Very long peiods

Long periods

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

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7

6

8

10

The atomic radii of the elemtns in periodic table.

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Increase from left to right in a period

Do not chage from left to right in a period

Increase from top to bottom in a group

Decrease from top to bottom in a group

The ability of an atom to attract the shared pair of electons towards itself in a molecule is called

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Ionization energy

Electronietativity

Shielding effect

Electron affinity

Electron affinity of fluorine in kJmol-1 is

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-328

328

-330

-340

How many elements are prsent in each 2nd and 3rd period.

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2

32

18

8

How many periods are presnet in the modern periodic table.

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7

8

10

12

How many periods are present in the modern periodic table

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7

8

10

12

Metals are teh elements which have.

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Electronegative character

Electropositive character

Both a and b

None of the above

Aong the period which one of the followig decreases.

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Electronegativity

Ionization energy

Atomic radius

Electron affinity

Which is the softtest metal.

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Zn

Ca

Na

Al

Which is strongest oxidizing agent.

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Cholorine

Iodine

Fluorine

Bromine

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