The shielding of electrons gives rise to an effective nuclear charge, Zeff , which explains why boron is larger than oxygen. Estimate the approximate Zeff felt by a valence electron of boron and oxygen, respectively?
A) +5 and +8
B) +3 and +6
C) +5 and +6
D) +3 and +8
E) +1 and +4
The atomic radius of an element can be predicted based on its periodic properties. Atomic radii increase going down a group in the periodic table, because successively larger valence-shell orbitals are occupied by electrons. Atomic radii generally decrease moving from left to right across a period because the effective nuclear charge increases.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Effective Nuclear Charge concept. You can view video lessons to learn Effective Nuclear Charge. Or if you need more Effective Nuclear Charge practice, you can also practice Effective Nuclear Charge practice problems.