What are bivalent cations?how ae they formed?
Bivalent cations are the ions having +2 charge.
These are formed by removal of two electrons from the valence shell of the atom.
e.g.
Mg → Mg2+ + e-
In meiosis, bivalents are formed during
Bivalents are formed in meiosis during _________ phase.
What are covalent bonds? Why ae they different from ionic compounds? List their three characteristic properties?