periodic trends

periodic trends

excitation

when an electron jumps to higher energy levels

alkali metals

the first group on the periodic table

atomic radius

the size of an atom

group / family

periodic table verticals lines

long electron configuration

for example - Argon - 1s²2s²2p⁶3s²3p⁶

shorthand configuration

shortens electron configurations by using noble gases example - [He]

electron configuration chart

electronegativity

measure of an atoms tendency to attract bonding electrons

visible light

the only part that is visible on the electromagnetic spectrum

ionization energy

energy that it takes to move an electron

periodic table

it is organized by atomic number with periods and groups

violet

highest energy on the em spectrum

red

lowest energy on the em spectrum

relaxation

when the electron falls back down to its original energy level

period

the horizontal lines on the periodic table