Question

Which is the noble gas notation for chlorine?

Answer 1

Answer: The electronic configuration of Chlorine will be $[Ne]3s^23p^5$

Explanation: Chlorine is an element which belongs to the P-block of the periodic table. Its atomic number is 17.

Atomic Number = Number of electrons

Number of electrons = 17

The nearest noble gas which lies to Chlorine is Neon which has 10 electrons. Rest of the 7 electrons are filled in the 3s and 3p orbitals. Hence, the electronic configuration of Chlorine is

$[Cl]=[Ne]3s^23p^5$

Answer 2

Answer:

B. $[Ne] 3s^23p^5$

Explanation:

Chlorine is the element of group 17 and third period. The atomic number of chlorine is 17 and the symbol of the element is Cl.

The electronic configuration of the element chlorine is:-

$1s^22s^22p^63s^23p^5$

Noble gas notation includes a shorthand way of writing the electronic configuration of the elements.

The nearest noble gas - Neon which has electronic configuration of - $1s^22s^22p^6$

So, the noble gas notation for chlorine is:- $[Ne] 3s^23p^5$