Question # 1

Group runs from ________________

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Top to bottom

Left to right

Top to right

Bottom to left

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

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Size

Mass

Electronegativity

Nuclear char

The no.of elements in the first period is

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2

8

18

23

The number of periods is:

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6

7

8

9

D-block consists of:

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4th,5th & 6th periods

2nd, 3rd & 4th periods

1st, 2nd, & 3rd periods

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

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English

Italian

African

Indian

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

Which element has highest electronegativity?

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CI

F

Br

I

The atomic radil of the elements in periodic table:

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increase form left to right in period

increase form top to bottom

do not change form left to right in period

decrease form top to bottom in a group

The vertical columns in the periodic table are called:

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perlods

groups

rows

blocks

Mendeleev periodic table was based upon the:

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electronic configuration

atomic mass

atomic number

completion of a subshell

The other name of modern periodic table is ________________ of periodic table.

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Long form

Simplified

Simplest

Nil

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 no.of electrons in the valence shell of noble gases is

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1

6

7

8

N consist of ________________ sub shells.

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4

1

2

0

Mark the incorrect statement about ionization energy:

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it is measured in Kjmol^-1

it is absorption of energy

it decreases in period

it decreases in a group

The amount of energy given out when an electron is added to any atom is called:

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lattice energy

ionization energy

electronegative

electron affinity

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