Here are the Main Group (Group A) numbers for each of the elements listed:
- Sulfur, S: VIA (6A)
- Strontium, Sr: IIA (2A)
- Phosphorus, P: VA (5A)
- Krypton, Kr: VIIIA (8A)
- Fluorine, F: VIIA (7A)
- Boron: IIIA (3A)
You can input them as follows:
- Sulfur, S: VIA (6A)
- Strontium, Sr: IIA (2A)
- Phosphorus, P: VA (5A)
- Krypton, Kr: VIIIA (8A)
- Fluorine, F: VIIA (7A)
- Boron: IIIA (3A)