Question

velocity ovelocityf electron in second excited state of be³+ ion is​

Answer 1

Answer:

Velocity of an electron in Bohr's orbit-

V=

h

2πKe

2

​

×

n

Z

​

ms

−1

V=2.188×10

6

×

n

Z

​

ms

−1

for Be

+3

,Z=4,n=4 for 3

rd

 excite state

V=2.188×10

6

×

4

4

​

ms

−1

V=

1000

2.188×10

6

​

×

4

4

​

kms

−1

V=2.188×10

3

 Km/secExplanation: