Question # 1

N consist of ________________ sub shells.

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4

1

2

0

Long form of periodic Table is constructed the basis of:

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Mendeleev postulate

atomic number

atomic mass

mass number

.................... of an atom is not fixed.

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Size

Mass

Electronegativity

Nuclear char

The 2nd and third periods are called

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short period

Normal period

Long period

Very long period

________________ elements were discovered in year 1800.

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34

35

36

37

The number of periods is:

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6

7

8

9

The elements of group 17 are called:

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Carbon family

Noble gases

Alkaline earth metals

Halogen family

The right most position in the periodic table is occupied by:

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Alkall metals

Alkaline earth metals

Translation metals

Noble gasses

Modern periodic table can be classified into ________________.

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Elements

s, p, d, f blocks

Periods

ROWS

............... periodic table consist of group & periods.

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Bohr

Rutherford

Mendeleev's

Nil

In period, ionization energy of elements

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Increases

Decreases

Remains constant

None of these

An ________________ scientist arranged the elements in order in periodic table.

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English

Italian

African

Indian

Th name of chemist who arranged all the elements in the periodic tale is :

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J.Newlands

Columb

Einstine

None of these

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