Most of the mass of the atom is -
a) in the center of the atom
b) around the outside of the atom
c) contained in electrons of the atom
d) contained in the protons of the atom
The part of the atom that orbits the nucleus is the-
a) proton
b) neutron
c) electron
d) isotope
The first energy level can only hold ___ electrons
a) 8
b) 18
c) 32
d) 2
All other OUTER energy level (shells) can hold up to ____ electrons
a) 8
b) 18
c) 32
d) 2
A complete outer energy level contains ____ electrons
a) 8
b) 18
c) 32
d) 2
a) in the center of the atom
b) around the outside of the atom
c) contained in electrons of the atom
d) contained in the protons of the atom
The part of the atom that orbits the nucleus is the-
a) proton
b) neutron
c) electron
d) isotope
The first energy level can only hold ___ electrons
a) 8
b) 18
c) 32
d) 2
All other OUTER energy level (shells) can hold up to ____ electrons
a) 8
b) 18
c) 32
d) 2
A complete outer energy level contains ____ electrons
a) 8
b) 18
c) 32
d) 2