1. Very active metal atoms are:
O
A. easy to reduce
O
B. good at gaining electrons
O
C. good at losing electrons
O
D. soft and black

Barium and Chlorine

Explanation:

Ionic bonds are formed between metals and non metals where the metals lose electrons and become positively charged and the non metals gain electrons and become negatively charge. The opposite charges cause them to be attracted to each other and Bond. The only metal in those options above is Barium. Therefore an ionic bond will be formed between Barium and Chlorine.