Identifying Characteristics of Atoms Number of
Protons
Number of
Neutrons
Atomic
Number
Mass
Number
Element
(symbol)
A
7
B
15
D
26
56
Using the periodic table, complete the table to describe each atom. Type in your answers.
A
B
С
D
F

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.