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Question

Electronic configuration of some elements are given below:
L:1s22s22p4
Q:1s22s22p63s23p5
P:1s22s22p6,3s1
R:1s22s22p63s2
The ionic compound that can be formed by these elements are:

A
L2P,RL,PQ and R2Q
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B
LP,RL,PQ and RQ
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C
P2L,RL,PQ and RQ2
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D
LP,R2L,P2Q and RQ
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Solution

The correct option is C P2L,RL,PQ and RQ2
Based on the given electronic configurations, it can be inferred that,
L represents O atom,
Q represents Cl atom,
P represents Na atom and
R represents Mg atom.

So,
The compound formed between L and P will P2L.
The compound formed between L and R will be RL.
The compound formed between P and Q will be PQ.
The compound formed between R and Q will be RQ2.

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