arrangement of electrons in an atom
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define energy level
fixed energy value that an electron in an atom may have
region in space where theres a high probabiltiy of finding an electron
define Heisenbergs uncertainity principle
impossible to measure the velocity and the position of an electron at the same time
what instrument is used to examine spectra
spectrometer or spectroscope
what series is found in infrared region
what does an emission spectrum consist of?
coloured lines against a dark background
what shape are p orbitals?
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