JEE Main 2017 — s Block Elements Question with Solution
JEE Main 2017 (08 Apr Online)
Question
Consider the following ionization enthalpies of two elements 'A' and 'B'.
Which of the following statements is correct?
| Element | Ionization enthalphy | ||
| A | 899 | 1757 | 14847 |
| B | 737 | 1450 | 7731 |
Which of the following statements is correct?
Choose an option
Show full solutionCorrect option: D
Correct answer
DBoth 'A' and 'B' belong to group-2 where 'B' comes below 'A'.
Step-by-step explanation
Both 'A' and 'B' belong to group-2, because the 3rd ionization energy is very high, it means 3rd 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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