Chem Exam 2 Flashcards
(81 cards)
How to calculate the mass of a atom?
Protons and neutrons
What determines the energy of a nucleus?
electrons
Electromagnetic radiation is…
emitted energy
particles of electromagnetic radiation are…
photons
electron energy levels are…
lines in an atomic spectrum that are associated with the changes in energies of the electrons
when does the electron energy levels increase
when the neutrons and electrons are further from the nucleus
the number of sub levels in an energy level is equal to…
the principal quantum number of that energy level
orbital sublevels are
S (1 orbital), P (3 orbitals), D (5 orbitials)
How many electrons are in the s sublevel
2
How many electrons are in the p sub level
6
How many electrons are in the d sub level
10
ground state electron configurations are sued to…
indicate the placement of electrons in an atom and to find on periodic table
carbon electron configuration
1s^2 2s^2 2p^2
orbital boxes are…
the boxes used to show how electrons are arranged in the orbitals of an atom
The group number on the periodic tell the number of…
valence electrons for the elements
The lewis symbol represents…
the number of valence electrons as dots
atomic radius
distance between the nucleus and the outermost electrons
atomic size is determined by the atoms…
atomic radius
periodic table trends with the atomic radius
-increases from top to bottom
-decreases from left to right
-smallest in top right corner
-largest in bottom left corner
ionization energy
the energy required to remove one of the outermost electrons
cation
positive charged ion
anion
negative charged ion
ionization energy for metals
low
ionization energy for nonmetals
high
