Explanation:
the physical and chemical properties of an element are periodic functions of their atomic number.
Answer:
C. BF3
Explanation:
The boron in BF3 is electron poor and has an empty orbital, so it can accept a pair of electrons, making it a Lewis acid.
Answer:
PbSO4 is not a covalent compound.
Explanation:
PbSO4 is an ionic compound.
They are so small that they dont scatter light, Or never settle out
