Phytoplankton are unicellular photosynthetic organisms which are vital to ocean life and play a major role in regulation of carbon dioxide in the atmosphere. a. True
b. False

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8