Which of the following element belongs to the group 18 ?

H

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N e

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C l

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F

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Solution

The correct option is B $N e$
Group 18 elements in the sense there should be 8 electrons in its valence shell that is octet with stable configuration.Hence inert elements are Neon,Xenon and so on.

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Similar questions

The atomic numbers of three elements A, B and C are given below :

Element Atomic number

A 5

B 7

C 10

(i) Which element belongs to group 18? (ii) Which element belongs to group 15?

(iii) Which element belongs to group 13? (iv) To which, period/periods do these elements belong?

2, 8, 7

N (7)

F (9)

P (15)

A r (18)

Which element from the following has the highest ionisation energy ?

(a) P, Na, Cl (b) F, O, Ne (c) Ne, He, Ar

Explain your choice.

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