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How many of the following options are in...

How many of the following options are incorrect in accordance with the mentioned properties?
(I) `IP_1` of ion `M^(2+) gt EA1` of `M^(3+)`.(IP = ionization potential, and EA = electron affinity)
(II) `S lt Se lt Te lt O`(order of EA)
(III) `Li lt Be lt B  lt C`(order of electronegativity)
(IV) `Mn^(4+) lt Mg^(2+) lt Na^(+) lt K^(+)` (order of ionic size)
(V) `Li^(+) gt Na^(+) lt K^(+)` (order of hydrated size)

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The correct Answer is:
3
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