Question

Sodium (Na) and potassium (K) are in the same group in the periodic table. Sodium is in the 11th position. How many valence electrons does potassium have?

A. 0
B. 1
C. 9
D. 11

Answer 1

potassium is just below the sodium in periodic table in s group !

so the valence electron of sodium and potassium is same and that is 1

Answer 2

Answer: B: 1

Explanation: PLATO