Identify the elements X and Y using the ionisation energy values given below. Ionisation energy (Ist) {kJ} {/} {mol} (\IInd) X 495 4563 Y 71 1450 [16 Mar 2021 Shift 2]

Classification of Elements Part 1

Section: Chemistry

Question : 35 of 100

Marks: +1, -0

Identify the elements X and Y using the ionisation energy values given below.

	Ionisation energy (Ist)	kJ/mol‌(IInd)
X	495	4563
Y	71	1450

[16 Mar 2021 Shift 2]

	IE1	IE2
X	495	4563 kJ/mol
Y	71	1450 kJ/mol

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