Q.
The ionization energy of boron is less than that of beryllium because :
see full answer
Want to Fund your own JEE / NEET / Foundation preparation ??
Take the SCORE scholarship exam from home and compete for scholarships worth ₹1 crore!*
An Intiative by Sri Chaitanya
a
beryllium has a higher nuclear charge than boron
b
beryllium has a lower nuclear charge than boron
c
penetrating power of 2p-orbital of boron is less than penetrating power of 2s orbital of beryllium
d
the 2s and 2p-orbitals of boron are degenerate
answer is C.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
The ionisation energy of boron is less than that of beryllium because the outermost electron in boron occupies a 2p-orbital which has lesser penetrating power. Moreover Be has fully-filled s-subshell.
Watch 3-min video & get full concept clarity