Answer:
Isotopes of an element are atoms of the same element that have different number of neutrons.
What volume of 2.50 m lead ll nitrato
Answer=1
Potassium Sulfide= K2S (two metals, one non metal)
Sodium Oxide=Na2O (two metals. one nonmetal)
Sodium Chloride=NaCl (one metal, one nonmetal)
Magnesium Oxide=MgO (one metal, one nonmetal)
Magnesium Chloride=MgCl2 (one metal, two nonmetals)
Answer:
B
Explanation:
the number of protons never changes even if the atomic mass changes