Be, Mg, Ca increasing first ionization energy
Answer:
B
Explanation:
Noble gases are in group 18 (neon, argon, etc)
the answer is d hope this helps
Answer:
Empirical formulas can be determined from the percent composition of a compound. In order to determine its molecular formula, it is necessary to know the molar mass of the compound. Chemists use an instrument called a mass spectrometer to determine the molar mass of compounds.
Answer:
the shape of a piece of matter can change
