Which of the following phrases describes valence electrons? O A. Electrons that are part of the core of the atom
O B. Electrons that are closest to the nucleus
O C. Electrons that are farthest from the nucleus
D. Electrons identified by the period number of the element

C

Explanation:

because valence electrons are located at the last energy level

Element Grouping Quick Check:

1. Which element has two valence electrons?

D. calcium

2.Based on its position in the periodic table, which element would have seven valence electrons?

A. Chlorine

3. Which phrase describes a valence electron?

C. An electron in the outer energy level of an atom

4. Which phrase best describes a period on the periodic table?

A. A row of elements

5. Which two elements have the same number of energy levels with electrons in them?

A. Boron and Oxygen

Hope this helps!

14,16 18 reacts with group