Question

which element reacts easily with other elements and is the only one that does not real hydrogen zinc neon beryllium

Explanation:

Hydrogen is highly reactive as it has only one electron in its outer - shell and wants to achieve a stable electron configuration. Neon is a noble gas and has a full outer - shell, making it very unreactive. Zinc and beryllium are metals but not as reactive as hydrogen under normal conditions in terms of forming common compounds easily.

Answer:

A. hydrogen