Answer:
I am pretty sure it's Lithium because it's a light and soft metal. Bromine is a liquid so that cant be it and Niobium is a light gray crystalline (crystal/ sharp not dull).
Hope this helps :)
Explanation:
Answer:
it can be increased by the number of atoms on each side
Condensation is your answer!
Answer:
What is the composition of air?
Explanation: