this graphic shows

a
different ions of hydrogen
b
beta decay of hydrogen
c
different isotopes of hydrogen
d
hydrogen becoming a new element

c ) Different isotopes of hydrogen

Explanation: In chemistry, you define an isotope from one element, as the one composed by same number of protons, but different number of neutrons. This difference makes isotopes to have different physical properties

For Hydrogen, you may find 3 isotopes: Hydrogen (which has 1 proton and contains no neutrons), Deuterioum (which contains 1 proton and 1 neutron) and Tritium (which contains 1 proton and 2 neutrons)

Proton is referrenced as "p" and neutron is referrenced as "n"

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.