Observe the following data ( ∆_t H_1, ∆_t H_2 and ∆_{ eg } H represent the first, second ionisation enthalpies and electron gain enthalpy respectively) Element ∆_l H_1 ( kJmol ^{-1}) ∆_1 H_2 ( kJmol ^{-1}) ∆_{ eg } H ( kJmol ^{-1}) 1 520 7300 -60 II 490 3051 -48 III 1681 3374 -328 IV 2372 5251 +48 Using the data identify the most reactive metal.

TG EAMCET 3 May 2025 Shift 1 Paper

Question : 124 of 160

Marks: +1, -0

Observe the following data ( ∆tH1,∆tH2 and ∆egH represent the first, second ionisation enthalpies and electron gain enthalpy respectively)

Element	∆lH1(kJmol−1)	∆1H2(kJmol−1)	∆egH(kJmol−1)
1	520	7300	-60
II	490	3051	-48
III	1681	3374	-328
IV	2372	5251	+48

Using the data identify the most reactive metal.

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