Which part of the atomic model below would be most useful for identifying the chemical properties of the atom? A. The number of protons in the nucleus.
B. The number of electrons in the electron cloud.
C. The number of valence electrons in the electron cloud.
D. The atomic mass of the atom.

answer; i do believe the correct answer is (river); /// good luck

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons

може ли да зареждате повече информация, моля