Question

NEED ANSWER FAST!

Answer 1

Answer:

Both are unreactive.

Explanation:

Atom      Number of Electrons

 A                        2

 D                       10

The two atoms A and D are very stable and unreactive.

Valence electrons the outermost shell electrons in a neutral atom.

The number of valence electrons in A is 2

The number of valence electrons in D is 8

The atoms are stable and unreactive because for A, its two electrons are in the k-shell in which the maximum number of electrons here is 2. It has a noble configuration which makes it stable.

For atom D, the outermost electrons are in the L-shell in which the maximum number of electrons is 8. This also makes it stable and unreactive.

Both atoms will be reluctant to lose or gain electrons.