Q)
(chatquestion)...5.
2/26
13. The ratio of the ehergy of thle electrom in ground
evel di-
state of hydrogen to the electron in third excited
Bohis
state of Be3+ is
(1) 1:4
(2) 1:2
(3) 1:16
(4) 1:1
14,
In an atom two electrons move around the nucleus
in circular orbits of radii 4R and 9R. The ratio of
te of H-
s should
the time taken by them to complete one revolution
is
37
(1) 1:4
(2) 4:1
(3) 8:27
(4) 27:8
15. The radius of the first Bohr orbit of hydrogen atom
is P. The radius of the third orbit of He+ will be
espond
(1)
P.
(2) 2P
Thns...(14 ques?)
...
