Question

Sodium ions are used by your body every time you move a muscle. The difference between the Na+ ions and atomic Na is that A) ionic sodium has one more electron. B) atomic sodium has one more electron. C) atomic sodium has one fewer electron. D) ionic sodium is only found in the body.

Answer 1

B) atomic sodium has one more electron.

This can be easily seen if you compare the charges - ionic sodium carries one more positive charge than atomic sodium, so ionic sodium must have one fewer electron.