Session 13 TFiC- Part 3

A schematic description of a system that accounts for its known properties

The center of an atom, containing the protons and neutrons

The number of protons in an atom

The sum of the numbers of neutrons and protons in the nucleus of an atom

Atoms with the same number of protons but different numbers of nuetrons

A collection of atoms that all have the same number of protons

An atom with a nucleus that is not stable

The time it takes for half of the original sample of a radioactive isotope to decay

11 Protons, 11 electrons, 12 neutrons

8 electrons, oxygen-16

A, C

?

27 electrons

longer than nuclear force, but shorter electromagnetic force

90Y

237Np

Alpha and Beta

5 G’s