Question

number of core electrons and the number of valence electrons
argon (ar): ne3s²3p⁶
core electrons
valence electrons
done

Explanation:

Step1: Determine core electrons

Core electrons are the electrons in the inner shells. The electron configuration of Ne is \(1s^{2}2s^{2}2p^{6}\), which has 10 electrons. So, argon has 10 core electrons.

Step2: Determine valence electrons

Valence electrons are in the outermost shell. The outermost shell configuration is \(3s^{2}3p^{6}\), and \(2 + 6=8\). So, argon has 8 valence electrons.

Answer:

core electrons: 10; valence electrons: 8