Atomic structure- key terms Flashcards
1
Q
proton
A
a positiveky charged particle found in the nucleus of an atom
2
Q
Neutron
A
a neutral particle found in the nucleus of an atom
3
Q
Electron
A
a negatively charged particle found outside the nucleus in shells or energy levels
4
Q
Nucleus
A
the tiny central part of the atom containing most of the atoms mass
5
Q
Atomic number
A
The number of protons in the nucleus of an atom
6
Q
mass number
A
the number of protons and neutrons in the nucleus of an atom
7
Q
Isotopes
A
atoms of the same element with different numbers of neutrons
8
Q
electronic configuration
A
The arrangement of electrons in shells
