Answer
See the explanation
Work Step by Step
a. $Fe^{2+}$:
- Total number of protons: 26 (iron has 26 protons)
- Total number of electrons: 24 (since it is a positive ion, it has lost 2 electrons)
- The simplest compound formed between $Fe^{2+}$ and the oxide ion ($O^{2-}$) is iron(II) oxide, with the formula $FeO$.
b. $Fe^{3+}$:
- Total number of protons: 26 (iron has 26 protons)
- Total number of electrons: 23 (since it is a positive ion, it has lost 3 electrons)
- The simplest compound formed between $Fe^{3+}$ and the oxide ion ($O^{2-}$) is iron(III) oxide, with the formula $Fe_2O_3$.
c. $Ba^{2+}$:
- Total number of protons: 56 (barium has 56 protons)
- Total number of electrons: 54 (since it is a positive ion, it has lost 2 electrons)
- The simplest compound formed between $Ba^{2+}$ and the oxide ion ($O^{2-}$) is barium oxide, with the formula $BaO$.
d. $Cs^{+}$:
- Total number of protons: 55 (cesium has 55 protons)
- Total number of electrons: 54 (since it is a positive ion, it has lost 1 electron)
- The simplest compound formed between $Cs^{+}$ and the oxide ion ($O^{2-}$) is cesium oxide, with the formula $Cs_2O$.
e. $S^{2-}$:
- Total number of protons: 16 (sulfur has 16 protons)
- Total number of electrons: 18 (since it is a negative ion, it has gained 2 electrons)
- The simplest compound formed between $S^{2-}$ and the aluminum ion ($Al^{3+}$) is aluminum sulfide, with the formula $Al_2S_3$.
f. $P^{3-}$:
- Total number of protons: 15 (phosphorus has 15 protons)
- Total number of electrons: 18 (since it is a negative ion, it has gained 3 electrons)
- The simplest compound formed between $P^{3-}$ and the aluminum ion ($Al^{3+}$) is aluminum phosphide, with the formula $AlP$.
g. $Br^{-}$:
- Total number of protons: 35 (bromine has 35 protons)
- Total number of electrons: 36 (since it is a negative ion, it has gained 1 electron)
- The simplest compound formed between $Br^{-}$ and the aluminum ion ($Al^{3+}$) is aluminum bromide, with the formula $AlBr_3$.
h. $N^{3-}$:
- Total number of protons: 7 (nitrogen has 7 protons)
- Total number of electrons: 10 (since it is a negative ion, it has gained 3 electrons)
- The simplest compound formed between $N^{3-}$ and the aluminum ion ($Al^{3+}$) is aluminum nitride, with the formula $AlN$.
