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Periodic Classification of Elements MCQ Question with Answer

Periodic Classification of Elements MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 22
Elements belonging to the same period are

Si, N, O
Li, Be, Mg
Sc. Ti. V
Cu, Zn, Cd
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Question No : 23
3.Atomic number of an element X is 34, it belongs to

IV period, VIA group
IV period, IIA group
V period, III B group
IV period, VII A group
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Question No : 24
An element A has atomic number 7. It will have properties similar to the element with atomic number

85
57
26
51
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Question No : 25
Which of the following has maximum ionisation energy ?

Li
Be
C
B
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Question No : 26
On moving across a period from left to right the ionisation energy increases because

value of principal quantum number increases
effective nuclear charge increases
atomic size increases
nuclear charge increases
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Question No : 27
Which of the following has highest ionisation energy?

Be
Cl
Ba
N
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Question No : 28
A metal may have atomic number

85
32
38
2
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Chemistry set 1 30 Start
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