Consider the following ionization enthalpies of two elements 'A' and 'B'. Element Ionization enthalphy kJ / mol 1 st 2 nd 3 rd A 899 1757 14847 B 737 1450 7731 Which of the following statements is correct?

Question

Consider the following ionization enthalpies of two elements 'A' and 'B'. Element Ionization enthalphy kJ / mol 1 st 2 nd 3 rd A 899 1757 14847 B 737 1450 7731 Which of the following statements is correct?, Both 'A' and 'B' belong to group-1 where 'A' comes below 'B'., Both 'A' and 'B' belong to group-2 where 'A' comes below 'B'., Both 'A' and 'B' belong to group-1 where 'B' comes below 'A'., Both 'A' and 'B' belong to group-2 where 'B' comes below 'A'.

MARKS App · Accepted Answer

Both 'A' and 'B' belong to group-2, because the 3 rd ionization energy is very high, it means 3 rd electron gets removed from internal shell and where 'B' comes below 'A', because on moving from top to bottom in group the ionization energy decreases.

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Element	Ionization enthalphy $(kJ / mol)$
	$1^{st}$	$2^{nd}$	$3^{rd}$
A	899	1757	14847
B	737	1450	7731