Question

Which of these pairs of elements have the same number of valence electrons?

hydrogen (H) and helium (He)
sodium (Na) and potassium (K)
carbon (C) and oxygen (O)
boron (B) and beryllium (Be)

Answer 1

Sodium (Na) and potassium (K)

Step-by-step explanation:

I took the test.

Answer 2

Pairs of elements that have the same number of valence electrons are:
sodium (Na) and potassium (K).