Question

examine the electron configuration below. if this were a neutral atom, what element would this be?
$1s^2 2s^2 2p^6$
a argon
b helium
c neon

Explanation:

Step1: Calculate total electrons

For a neutral atom, the number of electrons equals the atomic number. Sum the exponents: \(2 + 2 + 6 = 10\).

Step2: Identify element by atomic number

An atomic number of 10 corresponds to neon (Ne) on the periodic table. Argon (Ar) has atomic number 18, and helium (He) has atomic number 2.

Answer:

C. neon