In methane, the valency of carbon is:
Valency of carbon in methane:
Fill in the blanks.
(a) If the valency of carbon is 4 and that of hydrogen is 1 then the molecular formula of methane is ………… .
(b) The gas Helium, is chemically ………… .
(c) There are two electrons in the outermost orbit of the magnesium atom. Hence, the valency of magnesium is ………… .
(d) and ………… are isotopes of chlorine.
(e) Isotopes of uranium are used as ………… in atomic reactors.