Question

The most suitable unit for expressing nuclear radius is
A) micro
B) nanometre
C) fermi
D) angstrom

Answer 1

The most suitable uit for expressing nuclear radius is C) fermi.

Named for the Italian Physicist Enrico Fermi who lived from 1901 to the year 1954, 1 fermi equals 10⁻¹⁵ meter.

However, today the unit called fermi is no longer in use. In its place, the unit used is called femtometer whose symbol is fm. 1 fermi = 1 femtometer.

Answer 2

Answer: FERMI

Explanation:

Atomic sizes are on the order of 0.1 nm = 1 Angstrom = 10-10 m

Nuclear sizes are on the order of femtometers which in the nuclear context are usually called fermis:

1 fermi = 10^-15m