Subatomic Particles
These two particles have roughly equal mass and are both found in the nucleus of atoms
What are protons and neutrons?
The atomic number of 5626Fe3+
What is 26?
As the wavelength of electromagnetic energy increases, the energy does this
What is decreases?
Elements are listed on the Periodic Table in order of this number
What is atomic number?
The electron configuration of helium, He
What is 1s2?
Comparing numbers of these two particles tells us the charge on an atom (ion)
What are protons and electrons?
The mass number of 2311Na+
What is 23?
According to the principle of conservation of energy, light is emitted when this change occurs in the atom
What is a decrease in energy?
This is how the mass number is calculated
What is add up the protons and neutrons?
The square section of the Periodic Table on the right is a block designated by this letter
What is p?
This particle has no charge, but is essential to the stability of the atomic nucleus
What is the neutron?
The number of neutrons in an atom of 2612Mg2+
What is 14?
The specific change in an atom that results in emission of visible light is
What is an electron dropping from a higher to a lower energy level?
This is how we find the mass number of an atom
What is we need to be given either the isotope symbol or the hyphenated name of the isotope (it cannot be found on the Periodic Table)?
This is the electron configuration for nitrogen
What is 1s2 2s2 2p3?
This is the only particle that is gained or lost by atoms in chemical interactions
What are electrons?
The number of electrons in an atom of 2713Al3+
What is 10?
This is what our eyes see when all of the wavelengths of visible light are emitted at once
What is white light?
This is the number of neutrons in an atom of Phosphorus-31
What is 16?
This is the maximum number of electrons that can fit in a d sublevel
What is 10?
This is the maximum number of electrons that can occupy a single orbital
What is 2?
The difference in particle makeup between 2311Na and 2612Mg
What is magnesium-26 has two more neutrons and one more proton (and one more electron)
Neils Bohr reasoned that since atoms only emit a few, precise energies, that electrons must exist in these
What are stationary states?
The number below the element symbol on the Periodic Table tells us this
What is the average mass for all isotopes of the element?
This is the rule relating principal energy level to the Periodic Table in the d block
What is n = row number minus 1?