Consider the following ionization enthalpies of two elements 'A' and 'B'
Which of the following statements is correct?
Element | Ionization | enthalpy | (kJ/mol) |
1st | 2nd | 3rd | |
A | 899 | 1757 | 14847 |
B | 737 | 1450 | 7731 |
Text Solution
Verified by ExpertsC
Generally, the ionization enthalpies or energy increases from left to right in a period and decreases from top to bottom in a group. Several factor such as atomic radius, nuclear charge, shielding effect are responsible for change of ionization enthalpies.
Here, Ist ionization enthalpy of A and B is greater than group I (Li 
to 
), which means element A and B belong to group -2 and all three given ionization enthalpy values are less for element 
means 
will come below 
.
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