Answer:
In atomic physics and quantum chemistry, the electron configuration is the arrangement of electrons in an atom, molecule, or other physical structure (e.g., a crystal). ... The concept is also useful for describing the chemical bonds that hold atoms together.
Explanation:
hope this helps :)
Answer:
1) some of the gas maybe metal but non metal directly refers it self to not begin metal
2) gases are present in only air . non metals are available in solid form too
The answer is:
C) Sound is a mechanical wave and needs a medium to travel through while light is an electromagnetic wave.