Based upon the valence numbers of the elements magnesium (2)and hydrogen (1),predict how many covalent bonds would form between these atoms to achieve the full complement of electrons in their outermost energy shells.
A)one
B)two
C)three
D)four

Question

Quizplus · Accepted Answer

Magnesium needs to lose two electrons to achieve a full outer shell, while hydrogen needs to gain one electron. Therefore, they would bond together by sharing two electrons in a covalent bond. This means that two covalent bonds would form between one magnesium atom and two hydrogen atoms.

Based Upon the Valence Numbers of the Elements Magnesium (2)and