| Term | Definition |
|---|
| Henry Mosley | According to ___ periodic table, the physical and chemical properties of elements are periodic functions of their atomic weights. |
| quantum | The minimum amount of energy that can be gained or lost by an atom is known as a ______. |
| Pauli exclusion | The _____ principle states that a maximum of two elements may occupy a single atomic orbital, but only if the electrons have opposite spins. |
| electron configuration | The arrangement of electrons in an atom is called the _____ of an atom. |
| alkaline earth | The group 2A elements are known as _____ metals. |
| metalloids | Elements that have physical and chemical properties of both metals and nonmetals are known as _____. |
| atomic mass unit | The ______ measures the mass of an atom relative to the mass of carbon-12 atom, which is taken as a standard. One ____ is defined as 1/12 the mass of a carbon-12 atom. |
| photon | A _____ is a particle of electromagnetic radiation that has no mass and carries a quantum of energy. |
| E = hv | Photon formula. |
| energy of photon | What does E stand for in the photon energy formula. |
| Planck's constant | h in the photon energy formula is what? |
| frequency | What is v in the photon energy formula? |
| wavelength, frequency, amplitude, speed | What are the characteristics of a wave. |
| wavelength | the shortest distance between equivalent points on a continuos wave. |
| frequency | the number of waves that pass through a given point per second |
| amplitude | the hightest height of a wave from the origin to a crest or from the origin to a trough. |
| speed | the product of a waves wavelength and frequency. |
| 3.00 x 10(8) | light waves travel at a speed of |
| dual nature | The ___ ____ of an electron states that an electron has characteristics of a particle as well as a wave. |
| atomic emission spectra | An ___ ___ ___ of an element is the set of the frequencies of the electromagnetic waves emitted by the atoms of the element upon excitation. |
| ionization energy | The _____ _____ of an atom is defined as the energy required to remove an electron from a gaseous atom. |
| 3 sublevels and 9 orbitals | How many sublevels and orbitas are possible in the third energy level? |
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