Question # 1

The no. of electrons in the valence shell of alkali metals is

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1

2

4

7

The repetition of a property after a certain interval is:

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Periodicity

Properties

Periodicity of properties

None

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 2nd and third periods are called

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short period

Normal period

Long period

Very long period

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

N consist of ________________ sub shells.

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4

1

2

0

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

The modern periodic table is based on:

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Atomic number

Mass number

Relative mass

Nil

Long form of periodic Table is constructed the basis of:

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Mendeleev postulate

atomic number

atomic mass

mass number

Which element has highest electronegativity?

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CI

F

Br

I

Which of following does not belong to p-block?

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IIIA

IVA

VA

VIB

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

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Size

Mass

Electronegativity

Nuclear char

D-block consists of:

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4th,5th & 6th periods

2nd, 3rd & 4th periods

1st, 2nd, & 3rd periods

The elements of group 3 to 12 are called

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Normal elements

Transition elements

Radioactive elements

None of these

Li belongs to ________________ block.

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s

p

d

f

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

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Alkall metals

Alkaline earth metals

Translation metals

Noble gasses

The vertical columns in the periodic table are called:

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perlods

groups

rows

blocks

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9th Class Chemistry Chapter 3 Periodic Table and Periodicity of Properties English Medium KPK Boards Online Mcqs MCQs With Answers

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