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A 'p'-block element (E) and hydrogen form a binary cation \({\left({\text{EH}}_{\text{x}}\right)}^{+}\), while EH 3 on t…

Q1

A 'p'-block element (E) and hydrogen form a binary cation \({\left({\text{EH}}_{\text{x}}\right)}^{+}\), while EH3 on treatment with K2HgI4 in alkaline medium gives a precipitate of basic mercury(II) amido-iodine. Given below are first ionisation enthalpy values \(\left({\text{kJmol}}^{−1}\right)\) for first element each from group 13, 14, 15 and 16. Identify the correct first ionisation enthalpy value for element E.

[JEE Main 2026, 22 Jan (Shift 2)]

a

801

b

1086

c

1312

d

1402

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