EVERYDAY SCIENCE

Detailed explanation-1: -In a periodic table the noble gases are regarded as the most stable in terms of chemical stability and not in terms of structural or nuclear stability. Complete answer: Iron is the most stable element in terms of structural stability and in terms of nuclear stability but not in terms of the chemical stability.

Detailed explanation-2: -Noble gases are the least reactive of all elements. That’s because they have eight valence electrons, which fill their outer energy level. This is the most stable arrangement of electrons, so noble gases rarely react with other elements and form compounds.

Detailed explanation-3: -Noble gases are odorless, colorless, nonflammable, and monotonic gases that have low chemical reactivity. The full valence electron shells of these atoms make noble gases extremely stable and unlikely to form chemical bonds because they have little tendency to gain or lose electrons.

Detailed explanation-4: -Only krypton, xenon, and radon are known to form stable compounds. The compounds of these noble gases are powerful oxidizing agents (substances that tend to remove electrons from others) and have potential value as reagents in the synthesis of other chemical compounds.

Detailed explanation-5: -Hydrogen-1. Hydrogen-2. Helium-3. Helium-4 no mass number 5. Lithium-6. Lithium-7 no mass number 8. Beryllium-9. Boron-10. More items