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Chap. 4 Cross Word Puzzle!!!

Across
the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.
a positively charged ion, i.e., one that would be attracted to the cathode in electrolysis.
an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals.
a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
of or relating to an orbit or orbits.
each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
Down
the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
a negatively charged ion, i.e., one that would be attracted to the anode in electrolysis.
the lowest energy state of an atom or other particle.
a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
the central and most important part of an object, movement, or group, forming the basis for its activity and growth.