Answer: SiO2 + 4HF = SiF4 + 2H2O
Explanation:
pls mark brainliest if right if not im so sorry
If 1mole ------------- is ---------------- 6.02*10²³
than 0.25mole ----- is ---------------- x
x = [0.25mole*6.02*10²³]/1mole = <u>1,505*10²³</u>
That would be phosphorus. It’s electron configuration is 1s^2 2s^2 2p^6 3s^2 3p^3