Write the Atomic Symbols for the Following Neutral Isotopes

Q11: What name is commonly given to the

Q12: Barium is an alkali earth metal.

Q13: An alpha particle consists of two protons

Q14: The atomic weight for an atom is

Q15: Iodine is the only non-metal that is

Q17: Lanthanides are rare earth elements.

Q18: Identify X in the expression <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6848/.jpg"

Q19: Ions are _.<br>A) atoms that have gained

Q20: Atoms combine to form molecules (compounds) in

Q21: A 3.45 gram sample of hematite (Fe₂O₃)