Answer:
I think it's Csl
I don't really know
but follow me and heart this
The number of electrons in an atom is directly proportional to the number of protons, which is clearly represented by atomic number.
If you were to notate all of the electron configurations of the atoms in the 2nd row, you would clearly see an increase in the number of valence electrons from left to right.
Answer:
The main energy levels are the shells where the electron resides in a location that's relative to the atom's nucleus.
Explanation:
In electronic configuration in chemistry, the main energy levels are the shells where the electron resides in a location that's relative to the atom's nucleus. Such an energy level is usually denoted by the principal quantum number n. So n can be 1,2,3,4...e.t.c
