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Radiation Physic / Structure of Matter
Pima / Abq / Warner
Terms in this set (55)
Model of the atom 'modeled' after the Solar System. Mostly empty space
The number of nucleons in an atom (Protons and Neutrons added together give you the mass.)
Positively charged particles found within the nucleus
The number of protons found within the nucleus
Atomic Number determines
what the element is
Atomic number is abbreviated how?
with the letter "Z".
1 proton has the mass of how many electrons?
Neutrally charged particles found within the nucleus
1 neutron has the mass of how many electrons?
Negatively charged particles of matter. teeny-tiny.
There are this many electron orbits
Rules of electron orbits
Innermost orbits are filled first. Start from K and lettered through Q.
2n squared formula
Defines t=what the maximum number of electrons may be in the orbital ring.
Electron Binding Energy
The force that holds electrons in orbit.
has six rings.
Atomic number of Tungsten
How do you figure the number of neutrons?
by subtracting atomic number from Atomic mass
How many neutrons in Tungsten if its Atomic Number is 74 and its mass is 184?
The number of electrons normally found in the outermost orbit rings of the atom
Group I and Group VII are unstable/reactive
The most stable group of the periodic table
is Group VII
Number of electron orbital rings
AKA as "the happy atom" rule. No atom can have more than 8 electrons in its outermost shell. All atoms WANT to have 8 electrons in the outermost shell.
If there is an odd number of electrons in an outer shell it tends to be
unstable. Because it wants to have 8 electrons in outer shell.
Molecular bond where 2 or more atoms share a single, common outer orbital shell.
Molecular bond between 2 or more atoms involving the transfer of an electron.
An unstable ucleus emitting energy and/or particles in an attempt to become stable.
Time required for a quantity of radioactivity to be reduced to 1/2 its original value
Energy-based ionizing radiation
x-ray, gamma. They are bundles of pure energy with no mass, no charge, travel at the speed of light and have waveform movement
Matter-based ionizing radiation
Alpha, beta, proton, Neutron. They are particles of matter; they have mass, they can have a charge. Travel slower than the speed of light, and move in straight lines.
Mass in a gravitational field
Anything that occupies space and has mass
The sum of an object's matter
The ability to do work
Basic unit of matter; smallest particle of an element
the smallest unit of most compounds
a subatomic particle that has a negative charge
Electron Binding Energy
The strength of attachment of an electron to the nucleus of an atom; the closer an electron is to the nucleus, the higher the electron binding energy
Maximum number of electrons that may be held in an electromagnetic orbital ring. i.e. 2 x 7 squared: 2 x 49 =98
Two ways that Electron binding energy varies
1) Electron's state of inertia is motion. Wants to fly through space in a straight line.
2) End result is that an electron orbits the nucleus, as the force holds the electrons in orbit.
Positive ion and negative ion
The distance between crests of waves, such as those of the electromagnetic spectrum.
atoms that disintegrate by emitting electromagnetic radiation; also called tracers
a proton or neutron - found within the nucleus
the number of wavelengths that pass a given point per second
Speed of light
the speed at which light travels in a vacuum; 186,000 miles / second., or 300,000 km/sec.
the height of a wave's crest
contains two protons and two neutrons and has a double positive charge
an electron emitted from the nucleus during some kinds of radioactive decay
high energy electromagnetic radiation given off by a radiostope. No mass, no charge.
A form of energy that travels through space as waves
Periodic Table of the Elements
Organized by Dmitri Mendeleev, A chart of the chemical elements, arranged corresponding to the number of electron shells in their atoms; which is their atomic number
The number of electrons normally found in the outermost orbital ring of the atom.
The number of an electron's orbital rings
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