Chemical Periodicity Test

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Chemical Periodicity Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Which of these dose not reflect the periodicity of the elements

A
Bonding behaviour

B
Electronegativity

C
Ionization energy

D
Neutron/proton ratio

Solution

n / p ratio is a cause of radioactivity.
Question 2
1 / -0

The electronic configuration of halogen is

A
ns²np⁶

B
ns²np³

C
ns²np⁵

D
ns²

Solution

Halogens has 7 electrons in his valance shell (ns²np⁵).
Question 3
1 / -0

Hydrogen by donating one electron forms H⁺. In this property, it resembles with

A
Transitional metals

B
Alkaline earth metals

C
Alkali metals

D
Halogens

Solution

As alkali metals have tendency to loose e^-.
Question 4
1 / -0

The tenth elements in the periodic table resembles with the

A
First period

B
Second period

C
Fourth group

D
Ninth group

Solution

Each period consists of a series of elements whose atom have the same principal quantum no. (n) of the outer most shell i.e. In second period n = 2, this shell has four orbitals (one 2s and three 2p) which can have eight electrons, hence second period contains 8 elements from atomic no. 3 to 10.
Question 5
1 / -0

Who developed the long form of periodic table

A
Lothar Meyer

B
Niels Bohr

C
Mendeleef

D
Moseley

Solution

Neils Bohr developed the long form of periodic table on the basis of Mosley’s principle.
Question 6
1 / -0

The electronic configuration of an element is 1s², 2s²2p⁶, 3s²3p³. What is the atomic number of the element which is just below the above element in the periodic table

A
33

B
34

C
31

D
49

Solution

33 - 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p³
Question 7
1 / -0

In the periodic table, the element with atomic number 16 will be placed in the group

A
Third

B
Fourth

C
Fifth

D
Sixth

Solution

16-1s²2s²2p⁶3s²3p4 there are 6e^-in outer most shell therefore its group is VI^thA.
Question 8
1 / -0

The d-block elements consists mostly of

A
Monovalent metals

B
All non-metals

C
Elements which generally form stoichiometric metal oxide

D
Many metals with catalytic properties

Solution

Many metals with catalytic properties because

(i) They provide surface area for reaction to occur

(ii) They decreases the ionisation energ

(iii) They have vacant d-orbitals.
Question 9
1 / -0

Which one of the following belongs to representative group of elements in the periodic table

A
Lanthanum

B
Argon

C
Chromium

D
Aluminium

Solution

Aluminium. As it belongs to p-block element.
Question 10
1 / -0

An element of atomic number 29 belongs to

A
s-block

B
p-block

C
d-block

D
f-block

Solution

Cu₂₉- [Ar] 3d¹⁰ 4s¹.

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Chemical Periodicity Test - 1

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Chemical Periodicity Test - 1

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Question 1

Bonding behaviour

Electronegativity

Ionization energy

Neutron/proton ratio

Solution

Question 2

ns2np6

ns2np3

ns2np5

ns2

Solution

Question 3

Transitional metals

Alkaline earth metals

Alkali metals

Halogens

Solution

Question 4

First period

Second period

Fourth group

Ninth group

Solution

Question 5

Lothar Meyer

Niels Bohr

Mendeleef

Moseley

Solution

Question 6

33

34

31

49

Solution

Question 7

Third

Fourth

Fifth

Sixth

Solution

Question 8

Monovalent metals

All non-metals

Elements which generally form stoichiometric metal oxide

Many metals with catalytic properties

Solution

Question 9

Lanthanum

Argon

Chromium

Aluminium

Solution

Question 10

s-block

p-block

d-block

f-block

Solution

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ns²np⁶

ns²np³

ns²np⁵

ns²