Answer:
SrO = Strontiumoxide
Step-by-step explanation:
Strontium is an element part of group 2. This means it has 2 electrons on the outer shell. This gives Strontium a positve electronic charge of +2.
Oxygen is an element, part of group 16. This means it has 6 electrons on the outer shell. To get the stable noble gas configuration, it needs 2 more electrons. This gives oxygen a negative electronic charge of -2.
This means 1 strontium atom can bind to 1 oxygen atom. To form Strontiumoxide (SrO).