Electron arrangement+ Atom Flashcards
1
Q
Cathode rays
A
streams of negatively-charged particles called electrons.
2
Q
Energy level
A
the fixed energy value that an electron in an atom may have
3
Q
Ground state
A
the electrons occupy the lowest available energy levels.
4
Q
Excited state
A
electrons occupy higher energy levels than those available in the ground state.
5
Q
Heisenberg’s Uncertainty Principle
A
it is impossible to measure at the same time both the velocity and the position of an electron.
6
Q
Orbital
A
region in space within which there is a high probability of finding an electron.
7
Q
Sublevel
A
subdivision of a main energy level and consists of one of more orbitals of the same energy.
