Question

which element has an electron located in a \p\ orbital?
c
he
be
li

Explanation:

Step1: Write electron - configurations

Carbon (C) has an atomic number of 6. Its electron - configuration is $1s^{2}2s^{2}2p^{2}$. Helium (He) has an atomic number of 2, and its electron - configuration is $1s^{2}$. Beryllium (Be) has an atomic number of 4, and its electron - configuration is $1s^{2}2s^{2}$. Lithium (Li) has an atomic number of 3, and its electron - configuration is $1s^{2}2s^{1}$.

Step2: Identify the element with p - electrons

From the above electron - configurations, only carbon has electrons in the p - orbital.

Answer:

C. C