Year: 2022
Topic: Structure of Atom
Time :
1.
If radius of second Bohr orbit of the He
+
ion is 105.8 pm, what is the radius of third Bohr orbit of Li
2+
ion?
(1). 158.7 pm
(2). 15.87 pm
(3). 1.587 pm
(4). 158.7 αΊ’