Well it's an alkali metal if that's what you're asking<span />
Im so sorry i don’t know I just need to answer 2 questions for me to be Able to ask
Answer:
Metalloids are semiconductive.
Explanation:
The answer is (3). The number of Sr is the same so if the compound has the smallest gram formula mass, it has the highest percent composition by mass of strontium. So the answer is (3).