electrons
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13 Terms
what is atomic emission spectrum
a spectrum of colours that an element emits when its atoms are excited and return to their ground state
what is the ground state of an element
the lowest energy level
what is the excited state
a higher energy level
what is a photon
a particle of light
why is atomic emission spectra important
it shows that electrons exist in specific energy levels
what are ions
when a atom gains or loses electrons
metal ions are formed by
positive ions
non-metal ions are formed by
negative ions
how many electrons does the sub shell s hold?
2 electrons
how many electrons does the sub shell p hold?
6 electrons
how many electrons does the sub shell d hold?
10 electrons
how many electrons does the sub shell f hold?
14 electrons
how can you tell if an element has moved to an excited state
when an atom is at its ground state it will fill out all subshells however if it is in an excited state it may skip a sub shell and move to another, indicating the atom is excited.