Chemistry
NULL
Medium
Question
Identify among the following which has Lowest energy of electron in 1st shell.
A
H
B
He+ (Z=2)
C
Li2+ (Z=3)
D
Be3+ (Z=4)
✓ Official correct answer
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
H
No member explanations yet for this option.
B
He+ (Z=2)
No member explanations yet for this option.
C
Li2+ (Z=3)
No member explanations yet for this option.
D
Be3+ (Z=4)
No member explanations yet for this option.
Explanation
For hydrogen-like ions, electron energy in the 1st shell is E = -13.6 x Z^2 eV. Be3+ has the highest nuclear charge (Z=4) among these, giving it the most negative (lowest) electron energy.
Related Questions
Q
Identify among the following elements that does NOT belong to VIIA group
Medium
· Chemistry
Q
4moles of Carbon dioxide(CO2) have _____molecules.
Medium
· Chemistry
Q
In acidic medium, ____ is used to balance oxygen atoms in an ionic equation.
Medium
· Chemistry
Q
What is the chemical symbol of "Potassium"?
Medium
· Chemistry