On the left, the chlorine atom has 17 electrons. On the right, the chloride ion has 18 electrons and has a 1− charge.

Does Cl have 7 electrons?

The atomic number of chlorine is 17. Hence it has got 7 electrons in its outermost shell.

Does chlorine have 1 valence electrons?

A: An atom of a group 17 element such as chlorine has seven valence electrons. It is “eager” to gain an extra electron to fill its outer energy level and gain stability. … A: Calcium is a group 2 element with two valence electrons.