Question # 1

The repetition of a property after a certain interval is:

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Periodicity

Properties

Periodicity of properties

None

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

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Size

Mass

Electronegativity

Nuclear char

Mendeleev periodic table was based upon the:

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electronic configuration

atomic mass

atomic number

completion of a subshell

Group runs from ________________

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Top to bottom

Left to right

Top to right

Bottom to left

The elements of group 3 to 12 are called

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Normal elements

Transition elements

Radioactive elements

None of these

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

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Bohr

Rutherford

Mendeleev's

Nil

Long form of periodic Table is constructed the basis of:

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Mendeleev postulate

atomic number

atomic mass

mass number

4th & 5th consist of ________________ elements.

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8

18

32

infinite

D-block consists of:

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4th,5th & 6th periods

2nd, 3rd & 4th periods

1st, 2nd, & 3rd periods

The periodic table consist of ________________ columns.

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Periods

Rows

Column

Nil

________________ is the shortest period.

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6th

8th

2nd

1st

N consist of ________________ sub shells.

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4

1

2

0

Which one of the following halogen has lowest electronegative?

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fluorine

chlorine

bromine

iodine

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