Question

hydrogen needs ____ electrons in its valence shell to be stable. * (0.5 points) 2 10 4 8 6

Explanation:

Hydrogen has a single electron in its valence shell (the first shell). The first shell can hold a maximum of 2 electrons. To achieve a stable electron configuration (similar to the noble gas helium), hydrogen needs 2 electrons in its valence shell.

Answer:

A. 2