Answer:
The correct answer is option C.
Explanation:
Binary compounds are compounds which are made up of only two types of different elements ,forexample : HCl, NaCl etc
Beryllium, Be, and chlorine, Ci, form a binary ionic compound:
Ratio of beryllium to chlorine atom = 1 : 2
If there are x atoms of beryllium, then there 2 x atoms of chlorine atoms in the ionic compound:
[tex]Be_xCl_{2x}=BeCl_2[/tex]
The formula for the compound is [tex]BeCl_2[/tex]
