JIPMER 2008
- Exam
- JIPMER
- Year
- 2008
- Subject
- Chemistry
- Chapter
- Classification of Elements and Periodicity in Properties
JIPMER 2008 · Chemistry · Classification of Elements and Periodicity in Properties
The set representing the correct order for first ionisation...
The set representing the correct order for first ionisation potential is
Options
- A(\mathrm{K} \gt \mathrm{Na} \gt \mathrm{Li})
- B(\mathrm{Be} \gt \mathrm{Mg} \gt \mathrm{Ca})
- CB (\gt) C (\gt) N
- D(\mathrm{Ge} \gt \mathrm{Si} \gt \mathrm{C})
Correct answer
B. (\mathrm{Be} \gt \mathrm{Mg} \gt \mathrm{Ca})
Step-by-step solution
The IP decreases in a group on moving downward because atomic radius increases hence the correct order is :
(\mathrm{Be} \gt \mathrm{Mg} \gt \mathrm{Ca})