Answer:
6m
Explanation:
The diameter of a proton is
1.75
×
10
-15
l
m
.
The Bohr radius — the most probable distance from the nucleus to the electron — is
5.29
×
10
-11
l
m
.
The diameter of a hydrogen atom is therefore
2
×
5.29
×
10
-11
l
m
=
1.058
×
10
-10
l
m
.
diameter of atom
diameter of proton
=
1.058
×
10
-10
m
1.75
×
10
-15
m
=
6046
That is,
diameter of atom = 6046 × diameter of nucleus
.
If the diameter of the model nucleus is 1 mm, then
diameter of model atom
=
6046 × 1 mm
=
6046 mm
=
6 m
(1 significant figure)
