Define energy level.
Write the electron configuration (s, p) for the sulfur atom in its ground state, showing the arrangement in atomic orbitals of the highest ener... show full transcript
Worked Solution & Example Answer:Define energy level - Leaving Cert Chemistry - Question 5 - 2007
Step 1
Define energy level.
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Answer
An energy level is the discrete (fixed, restricted, definite, specific) energy of an electron in orbit or an orbit (shell) which electrons of equal energy can occupy.
Step 2
Write the electron configuration (s, p) for the sulfur atom in its ground state, showing the arrangement in atomic orbitals of the highest energy electrons.
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Answer
The electron configuration for the sulfur atom in its ground state is:
1s22s22p63s23p4
The arrangement of the highest energy electrons is shown in the following orbital diagram:
3s: ↑↓
3p: ↑ ↑ ↑
(Note: The electron pair can be shown in the 3s, the 3p, or the p orbital with the other two orbitals having one electron each.)
Step 3
State how many (i) energy levels,
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(i) There are 3 energy levels occupied in a sulfur atom in its ground state.
Step 4
State how many (ii) orbitals,
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Answer
(ii) There are 9 orbitals occupied in a sulfur atom in its ground state.
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