Question

Which one of the element is a metal? a. C is the element with 7 protons, 7 electrons and 10 neutrons
b. A is the element with 8 protons, 8 electrons and 10 neutrons
c. E is the element with 8protons, 8 electrons and 10 neutrons
d. D is the element with 20protons, 20 electrons and 20neutrons​

Answer 1

Answer:

D is the answer.

Explanation:

the atom with 20 protons ie calcium would have to lose two electrons in order to become stable ( would have positive charge) thus it has a tendency to lose electrons and is metal.