Sodium's atomic number is 11. what does this tell you about an atom of sodium?

a. it contains 11 neutrons.
b. it has 11 protons to lose in ionic bonds.
c. it contains 11 protons.
d. its atomic mass is double this amount

Tlymphocytes mature in the? a. thyroid gland. b. bone marrow. c. spleen. d. thymus.

Which set of terms best describes a community of miners who live out in the countryside of west virginia and use specialized geographical equipment to analyze the composition of rocks

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons