Question

Ionic Polar Covalent Nonpolar Covalent
Hydrogen, H + Chlorine, Cl



Bromine Br + Bromine Br



Calcium, Ca + Fluorine, F

Answer 1

To classify the bonds formed between the pairs of elements, we need to consider their properties: ionic, polar covalent, and nonpolar covalent. Here is the classification for each pair:

1. **Hydrogen (H) + Chlorine (Cl)**
- **Type of Bond:** Polar Covalent
- **Explanation:** The electronegativity difference between hydrogen (2.1) and chlorine (3.0) is significant, leading to a polar covalent bond where electrons are shared unequally.

2. **Bromine (Br) + Bromine (Br)**
- **Type of Bond:** Nonpolar Covalent
- **Explanation:** Because both atoms are identical, they share electrons equally, resulting in a nonpolar covalent bond.

3. **Calcium (Ca) + Fluorine (F)**
- **Type of Bond:** Ionic
- **Explanation:** Calcium (a metal) and fluorine (a nonmetal) form an ionic bond due to the large electronegativity difference between them (Calcium donates electrons and becomes Ca²⁺ while fluorine accepts electrons and becomes F⁻).

Here is a summary:

| Pair of Elements | Bond Type |
|---------------------------------------|---------------------|
| Hydrogen (H) + Chlorine (Cl) | Polar Covalent |
| Bromine (Br) + Bromine (Br) | Nonpolar Covalent |
| Calcium (Ca) + Fluorine (F) | Ionic |