Question 1
An element M reacts with chlorine to form MCl
2, with oxygen to form MO, and with nitrogen to form M
3N
2. The most likely candidate for the element is
◦ B
◦ Sr
◦ Na
◦ Ge
Question 2
How many electrons does barium lose and nitrogen need to form Ba
3P
2?
◦ barium loses 3 and phosphorus gains 2
◦ barium loses 2 and phosphorus gains 3
◦ barium loses 3 and phosphorus gains 3
◦ barium loses 2 and phosphorus gains 2