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Chapter 4 Terms

Across
The arrangement of atom's electrons within orbitals.
A schematic drawing used to arrange atomic orbitals in order of increasing energy levels.
The total mass of an atom.
A positively charged subatomic particle found in the atomic nucleus.
The completely range of waves, from radio waves to gamma rays.
An electrically neutral subatomic particle found in the atomic nucleus.
An extremely small, negatively charged subatomic particle found outside the atomic nucleus.
Any subatomic particle found in an atomic nucleus. Another name for either proton or neutron.
An integer that specifies the quantized energy level within an atom.
A small discrete packet of energy.
Down
The nuclear charge experienced by outer-shell electrons, diminished by the shielding effect of the inner-shell electrons and also by the distance from the nucleus.
The number of protons in the atomic nucleus of each atom of a given element.
The tendency of inner-shell electrons to partially shield outer shell electrons from the the attractive pull exerted by the positively charged nucleus.
The amount of energy needed to pull an electron away from an atom.
Any member of a set of atoms of the same element whose nuclei contain the same number of protons but different numbers of neutrons.
A volume of space where an electron is likely to be found 90 percent of the time.
The dense, positively charged center of every atom.
The pattern of frequencies of electromagnetic radiation by the energized atoms of an element, considered to be an element's "fingerprint"
The number of nucleons (protons plus neutrons) in the atomic nucleus. Used primarily to identify isotopes.