Question

follow - up questions:

1. do metals form anions or cations?
2. what is the charge for all elements in group 1a?
3. what is the charge for all elements in group 2a?
4. what is the charge for all elements in group 7a?
5. can an ionic compound ever consist of a cation - cation or anion - anion bond? explain.
6. when naming a binary compound, what ending do you use to represent anions?
7. what is the overall charge of ionic compounds?

Explanation:

1. Metals lose electrons to form cations.
2. Group 1A elements lose one electron, so charge is \(+1\).
3. Group 2A elements lose two electrons, charge is \(+2\).
4. Group 7A elements gain one electron, charge is \(-1\).
5. Ionic compounds have electrostatic attraction. Cations and anions attract. Like - charged ions (cation - cation or anion - anion) repel. So, ionic compounds can't have cation - cation or anion - anion bonds.
6. For binary compounds, anions have “-ide” ending.
7. Ionic compounds are neutral. Cation and anion charges balance.

Answer:

1. Cations
2. \(+1\)
3. \(+2\)
4. \(-1\)
5. No. Ionic bonds form due to electrostatic attraction between oppositely - charged ions (cation - anion). Cation - cation or anion - anion pairs have like charges and repel each other.
6. -ide
7. \(0\) (neutral)