Question

The elements in Group 8A are called noble gases. Helium has two valence electrons. Each of the other noble gases has ___________ valence electrons.

a) 7
b) 6
c) 8
d) 10

Answer 1

The elements in Group 8A of the periodic table, known as noble gases, have 8 valence electrons.

Step-by-step explanation:

The noble gases are in Group 8A of the periodic table, and each of them has a full outer shell of electrons. Helium, which is the first noble gas, has a full outer shell of two electrons. Therefore, each of the other noble gases, such as neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn), has 8 valence electrons.