Question

Which of the following is a potassium ion?

• A. ${\mathrm{K}}^{3+}$
• B. ${\mathrm{K}}^{2+}$
• C. ${\mathrm{K}}^{+}$
• D. $\mathrm{K}$

Answer 1

The correct option is C

${\mathrm{K}}^{+}$

Explanation for correct option

• Atomic number of potassium is 19.
• its electronic configuration is [2,8,8,1].
• So by losing 1 electron from its valence shell it will becomes stable.

Hence , option (C) is the correct answer.