Q: the elements on the left side of the periodic table
A: nonmetals

Q: spectrum
A: the colors of light emitted by excited atoms when veiwed through a prism

Q: isoelectronic
A: having the same electron number

Q: photon
A: a particle of light energy

Q: wavelength
A: distance from wave crest to crest

Q: the element with just one electron
A: hydrogen

Q: neutron
A: a neutral subatomic particle

Q: Planck
A: his equation relates frequency to photon energy

Q: these elements are electrically conductive
A: metals

Q: this family of elements exists in all three phases at room temperature
A: halogens

Q: isotope
A: the same element with a different mass number

Q: the number an atom contains is shown by the atomic number
A: protons

Q: alkali metals
A: column I on the periodic table

Q: these are identified by letters s, p, d, and f
A: orbitals

Q: it is measured in hertz
A: frequency

Q: the number of orbitals at energy level two
A: four

Q: the number of d orbitals
A: five

Q: inert
A: a key property of the Noble Gases

Q: Bohr
A: he proposed the planetary model of the atom

Q: the number of p electrons in neon
A: six

Q: Rutherford used these particles
A: alpha

Q: energy level
A: a location of high probabitly of find an electron

Q: the maximum number of electron per orbital
A: two

Q: electron
A: a negative subatomic particle

Q: this unit is often used to measure the wavelength of light
A: nanometer

Q: the number of valence electrons in the halogens
A: seven

Q: subshell
A: another name for an orbital

Q: the lightest inert gas
A: helium