Answer:
The larger the number of the energy level, the farther it is from the nucleus. Electrons that are in the highest energy level are called valence electrons. Within each energy level is a volume of space where specific electrons are likely to be located.
Hi there!
D is true
the number of protons is same as atomic number in an atom
good luck!
Answer:
ok.. what is your question??? confused
The controlled variable, I think.