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Q.

Element with atomic number 115 has configuration as …..and with most stable cation as

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a

[Rn]7s25d104f147p3 M3+

b

[Rn] 7s25d104f147p3 M5+

c

[Rn]7s25d104f147p3 M+

d

[Rn]5d104f147p5 M5+

answer is A.

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Detailed Solution

M(115):[Rn]7s25d104f147p3Valence shell is 7s27p3with five electrons. Thus, +5,+3are variable oxidation state. But due to inert-pair effect, M5+
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