Flashcards
2.2.1-Shells and orbitals
Cards in this deck (10)
- 1The quantum numbers,n, indicatesthe shell that the electrons occupy
- 2The larger the value of nthe further the shell is from the nucleus and the higher the energy level
- 3number of electrons in the first 4 shells
- 4A shellis a group of atomic orbitals with the same principal quantum number,n. Also known as a main energy level.
- 5An orbialis a region of space where electrons may be found.
- 6s-orbitalsspherical shape. From n=1 upwards, each shell contains one s-orbital. This gives a total of 2s electrons in each shell.
- 7p-orbitalshas a three-dimensional dumb-bell shape. From n=2 upwards each shell contains 3 p-orbitals px, py, pz, at right angles to one another. possible total =6p electrons.
- 8d-orbitals f-orbitalsFrom n=3 upwards, each shell contains 5 d-orbitals. Possible total=10d electrons.
From n=4 upwards, each shell contains 7 orbitals. Possible total = 14f electrons. - 9Electrons in boxesEach box represents an orbital, therefore each box can hold 2 electrons.
- 10The two electrons in an orbital must have opposite spins.
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- A level Chemistry (2.2-Electrons , Bonding and Structure) Flashcards on 2.2.1-Shells and orbitals, created by Ben Geeman on 09/02/2017.
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- Ben Geeman
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