Question

how many electrons does oxygen need to gain to get a full outer shell?​

Answer 1

Explanation:

two electrons

Answer 4: Oxygen needs two electrons to fill its outermost electron shell. Hydrogen has one electron to play with. Therefore, an oxygen atom needs two hydrogens to bond to in order to complete its shell.

Answer 2

Answer:

For example, an Oxygen atom has 8 protons and 8 electrons spinning around it. Oxygen wants to have 8 valence electrons so it takes 2 electrons from other elements when bonding.

Explanation:

Hope this helps you mate xD