State the oxidation state of phosphorus in P4 and H2PO2−.
P4:
H2PO2−:

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

How is the atomic number of a nucleus changed by alpha decay