Question # 1

The number of periods is:

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6

7

8

9

Long form of periodic Table is constructed the basis of:

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Mendeleev postulate

atomic number

atomic mass

mass number

________________ is the shortest period.

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6th

8th

2nd

1st

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

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English

Italian

African

Indian

Transition elements are:

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all gases

all metals

all non-metals

all metalloids

The atomic number of potassium is:

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11

15

18

19

The repetition of a property after a certain interval is:

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Periodicity

Properties

Periodicity of properties

None

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

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Alkall metals

Alkaline earth metals

Translation metals

Noble gasses

4^th and 5^th period of the long form of periodic table are called

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short periods

Normal periods

Long periods

Very long periods

The 2nd and third periods are called

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short period

Normal period

Long period

Very long period

The elements of group 3 to 12 are called

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Normal elements

Transition elements

Radioactive elements

None of these

Along the period which one of the following decrease:

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Atomic radius

ionization energy

electron affinity

electronegative

The base of modern periodic table is

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Atomic number (Z)

Mass number (A)

Avogadro's Number

Quantum Number

The elements of group 17 are called:

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Carbon family

Noble gases

Alkaline earth metals

Halogen family

In period, ionization energy of elements

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Increases

Decreases

Remains constant

None of these

The modern periodic table is based on:

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Atomic number

Mass number

Relative mass

Nil

Group runs from ________________

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Top to bottom

Left to right

Top to right

Bottom to left

________________ elements were discovered in year 1800.

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34

35

36

37

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