The first Ionisation energy of Be is higher than that of Boron. Select the correct statements regarding this:
(i) It is easier to extract electron from 
orbital than 
orbital
(ii) Penetration power of 
orbital is greater than 
orbital
(iii) Shielding of 
electron by 
electron
(iv) Radius of Boron atom is larger than that of Be
Text Solution
Verified by ExpertsD
Be (4): 
B (5): 
The electron in 
can easily be extracted.
The penetrating power is of the order: 
The shielding power order: 
As we move along the period, the size decreases, as 
increases. Hence the radius of 
is smaller than the radius of Be.
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