Question

The partial electron configuration of an atom with 14 electrons is shown. 1s22s22p63s2X Which of the following does X represent?

Answer 1

Answer: The X represents $3p^2$

Explanation:

We are given:

An element having 14 electrons

The distribution of electrons around the nucleus of an atom in defined orbits is defined as the electronic configuration of an atom.

The electronic configuration given to us is $1s^22s^22p^63s^2X$

The next sub-shell that is filled after '3s' sub-shell is '3p' Till now, 12 electrons have been filled up. The remaining electrons are filled in '3p' sub-shell.

Now, the electronic configuration becomes: $1s^22s^22p^63s^23p^2$

Hence, the X represents $3p^2$

Answer 2

3p2

The second subshell is p and there are still 2 electrons to be placed