Question

According to the Bohr theory of the hydrogen atom, what is the minimum energy (in J) needed to ionize a hydrogen atom from the n = 2 state?

Answer 1

Answer:
Minimum energy needed to ionize an electron from
2
n
d
Bohr orbit of hydrogen atom is
5.45
×
10
−
19
J/atom.
Explanation:
In Joules per atom, minimum energy needed to ionize an electron from
n
t
h
Bohr orbit of a hydrogen atom is represented by the formula :
E
n
=
−
2.18
×
10
−
18
n
2
J/atom.
Therefore, minimum energy needed to ionize an electron from
2
n
d
Bohr orbit of hydrogen atom is,
E
2
=

−
2.18
×
10
−
18
2
2
J/atom
=
−
2.18
×
10
−
18
4
J/atom
∴
E
2
=
−
0.545
×
10
−
18
J/atom
=
5.45
×
10
−
19
J/atom. (answer).