<u><em>Answer:</em></u>
- Correct option is D. Family 18
<u><em>Explanation.</em></u>
The elements of group 18 of periodic table are called as noble gases. They are stable because they have complete valence shell electrons. So there octet rule is satisfied.
The elements of noble gases are
Answer: nothing. It remains undissolved
Explanation: saturated = dissolved as much solute as solvent can contain
Phosphorus, Chlorine. The IUPAC name is Phosphorus pentachloride
Activation energy
Hope this helps