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A hydride is a compound containing hydride ion, H-. Predict two elements whose hydrides would contain incomplete octets.
Answer : Be and B, because they can join to only two or three hydrogens, respectively, since they have fewer than 4 valence electrons. The elements Mg and Al may also do this, as could Na, Ca, and the other active metals of groups I and II.
I understand Be, B and Al has incomplete octet. However, how can Na, Ca, Mg, and the other active metals of groups I and II have incomplete octet?
Answer : Be and B, because they can join to only two or three hydrogens, respectively, since they have fewer than 4 valence electrons. The elements Mg and Al may also do this, as could Na, Ca, and the other active metals of groups I and II.
I understand Be, B and Al has incomplete octet. However, how can Na, Ca, Mg, and the other active metals of groups I and II have incomplete octet?
