The process of removing an electron from a stable nucleus is known as

The process of removing an electron form a stable nucleus is known as ionization energy. I hope this answered your inquiry, and if you require further assistance feel free to ask.

The air is going to come out because of the low pressure.

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.