Element M reacts with oxygen to form an oxide with the formula MO. When MO is dissolved in water, the resulting solution is basic. Element M could be _.
A) Na
B) S
C) N
D) Ba
E) C

Question

Quizplus · Accepted Answer

Barium (Ba) is a highly reactive metal and reacts with oxygen to form BaO. BaO dissolves in water to form Ba(OH)2, a strong base. Therefore, element M is most likely Ba.

Element M Reacts with Oxygen to Form an Oxide with the Formula