Question

As the valencies of lead are 2,4 the charge carried by plumbic ion is:
(a) +1
(b) +2
(c) +3
(d) +4

Answer 1

Hint: Many ions have common names formed from the stem of the element name (the Latin name in some cases) plus the ending -ic or -ous. In which -ic endings go with the higher possible charge, -ous endings go with the lower possible charge.

Complete step by step answer:
Lead (Pb) is a chemical element with atomic number 82. It is a heavy metal that is denser than most common materials. It is soft and malleable, and also has a relatively lower melting point. When freshly cut, lead is silvery with a hint of blue; it generally tarnishes to a dull gray color when it is exposed to air.

Lead shows two main oxidation states that is +4 and +2, There is a relatively large difference between the electronegativity of lead (II)and lead (IV). This difference marks the reversal in the trend of increasing stability of the +4-oxidation state going down the carbon group.
Lead (IV) or \[P{{b}^{4+}}\] is also known as plumbic ion whereas lead (II) is called plumbous ion.
The Romans were known to have used lead for water pipes, it is one of the reasons why lead ions are called plumbous or plumbic.

Some properties of Lead (IV) ion or plumbic ion:
As it is less stable it readily oxidized to \[P{{b}^{2+}}\].It is a good oxidizing agent as it easily loses electron to form \[P{{b}^{2+}}\].
\[P{{b}^{4+}}\,+\,2{{e}^{-}}\,\to \,P{{b}^{2+}}\]

Therefore, from the above statements we can conclude that plumbic ion is lead (IV) or \[P{{b}^{4+}}\]

So the correct option is (d).

Note: Plumbate is a salt having one of the several lead-containing Oxoanions.
Although the term plumbate can refer either to plumbate (II) or plumbate (IV), it traditionally refers specifically to plumbate (IV), whereas plumbate (II) is referred to as plumbite.