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The position of three elements A, B and ...

The position of three elements A, B and C in the Periodic Table are shown below-
`{:("Group 16","Group 17"),(-,-),(-,A),(-,-),(B,C):}`
(a) State whether A is a metal or non metal.
(b) State whether C is more reactive or less reactive than A. (c) Will C be larger or smaller in size than B ?
(d) Which type of ion, cation or anion, will be formed by element A ?

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