How many valence electrons must this atom lose to have a complete octet in its valence shell? 11 Protons 12 Neutrons 11 Electrons

o Give the formula for an ionic compound formed from each pair of ions. Na+ and 0²- Mg²+ and S²- Al³+ and F Ca²+ and P³-

Find the ionic compound among these. SO3 O C H4 CaH2 О CаН2 O C2H6

Name each ionic compound. In each of these compounds, the metal forms more than one type of ion. Spell out the full name of the compound. HgBr2 Fe2O3 CuI2

What is the formula of silicon tetrafluoride? SiF4 SiF SiF3 Si₂F4 Si4F

For each row in the table below, decide whether the pair of elements will form a molecular or ionic compound. If they will, then enter the chemical formula of the compound. If the elements will form more than one compound, enter the compound with the fewest total number of atoms. You may assume all chemical bonds are single bonds, not double or triple bonds. element #1 barium argon carbon element #2 sulfur helium iodine compound formed? chemical formula O ionic O molecular O neither O ionic O molecular O neither O ionic O molecular O neither 0 0 0 00 X 5 ? olo Ar

Name the following binary ionic compounds, using a Roman numeral to indicate the charge on the metal ion: a CoCl₂: CoCls: b NiS: Ni₂ S3: CMnO: Mn₂ 03: PbF2: PbF4: 10

For each row in the table below, decide whether the pair of elements will form a molecular or ionic compound. If they will, then enter the chemical formula of the compound. If the elements will form more than one compound, enter the compound with the fewest total number of atoms. You may assume all chemical bonds are single bonds, not double or triple bonds. element #1 hydrogen calcium radon element #2 compound formed? chemical formula O ionic chlorine chlorine neon 100 O molecular Oneither Oionic O O O O O O O molecular O neither O ionic O molecular Oneither 0 90 X 5

Provide the formula for  a compound containing 6 chlorine atoms for every 1 sulfur atom

Name these ionic compounds:    MgS Al2O3 Ca(HSO3)2 Sr3(PO4)2 Fe(OH)2 Pb(CH3COO)2 (NH4)2HPO4