Question

1. why do noble gases tend to be unreactive?

it will have a stable configuration like which noble gas?

Explanation:

Noble gases are un reactive because they have a full valence electron shell (octet configuration, except helium with 2 electrons). This full shell makes them stable, so they don't easily gain, lose, or share electrons. For the second part, when an atom forms an ion (e.g., sodium loses an electron to become Na⁺), it aims for a noble gas electron configuration. For example, Na⁺ has the same electron configuration as neon (Ne).

Answer:

Noble gases are unreactive because they have a full valence electron shell (stable electron configuration). When an atom forms an ion, it will have a stable configuration like a noble gas (e.g., Na⁺ has Ne's configuration).