i have to catogerize the list based on which is ionic, polar covalent, and nonpolar covalent

1.SI
2.HBr
3.HP
4.SO
5.BeF
6.BeCl
7.ScO

To categorize these compounds based on their bond type, you need to determine whether the bonds are ionic, polar covalent, or nonpolar covalent. Here's how you can do it:

1. SI (Silicon) - This is a covalent compound since it consists of two nonmetals. Silicon forms covalent bonds with other elements.
2. HBr (Hydrogen Bromide) - This is a polar covalent compound because hydrogen (H) is bonded with bromine (Br), which is more electronegative than hydrogen. As a result, there is an uneven distribution of electron density within the molecule, making it polar.
3. HP (Hydrogen Phosphide) - Similarly to HBr, this compound is also polar covalent. Hydrogen is bonded with phosphorus (P), which is more electronegative than hydrogen.
4. SO (Sulfur Monoxide) - This compound does not exist. The empirical formula for sulfur monoxide is SO, but in reality, you would find either sulfur dioxide (SO2) or sulfur trioxide (SO3). Both of these compounds are covalent compounds.
5. BeF (Beryllium Fluoride) - This compound does not exist. Beryllium usually forms ionic compounds. The correct formula for beryllium fluoride is BeF2, which is an ionic compound.
6. BeCl (Beryllium Chloride) - This compound does not exist. Beryllium usually forms ionic compounds. The correct formula for beryllium chloride is BeCl2, which is an ionic compound.
7. ScO (Scandium Oxide) - This compound is ionic. Scandium (Sc) is a metal, and oxygen (O) is a nonmetal. When metals bond with nonmetals, they usually form ionic compounds.

In conclusion:
- Silicon (SI), Hydrogen Bromide (HBr), and Hydrogen Phosphide (HP) are polar covalent compounds.
- Sulfur Monoxide (SO) does not exist, but sulfur dioxide (SO2) and sulfur trioxide (SO3) are covalent compounds.
- Beryllium Fluoride (BeF) does not exist, but the correct formula is BeF2, which is an ionic compound.
- Beryllium Chloride (BeCl) does not exist, but the correct formula is BeCl2, which is an ionic compound.
- Scandium Oxide (ScO) is an ionic compound.

Look up the electronegativities. Subtract them. If the difference is greater than 1.9, most will call it ionic. If zero it is covalent. Between is polar covalent. I'm sure 5 should be BeF2 and 6 should be BeCl2 (or I guess you may just be interest in the type of bond and aren't looking at formulas).