(a) Name the scientist whose work on energy levels in the hydrogen atom is depicted in the Google doodle reproduced on the right - Leaving Cert Chemistry - Question 5 - 2014
Question 5
(a) Name the scientist whose work on energy levels in the hydrogen atom is depicted in the Google doodle reproduced on the right.
Distinguish between the terms ene... show full transcript
Worked Solution & Example Answer:(a) Name the scientist whose work on energy levels in the hydrogen atom is depicted in the Google doodle reproduced on the right - Leaving Cert Chemistry - Question 5 - 2014
Step 1
Name the scientist whose work on energy levels in the hydrogen atom is depicted in the Google doodle reproduced on the right.
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Answer
The scientist whose work on energy levels in the hydrogen atom is depicted in the Google doodle is Niels Bohr.
Step 2
Distinguish between the terms energy level and atomic orbital.
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Answer
Energy level refers to the discrete (fixed, restricted, definite) energies that electrons can have in an atom. It indicates the shell or level in which an electron resides. In contrast, an atomic orbital describes the region in space around the nucleus where there is a high probability of finding an electron. It signifies the shape and volume that an electron occupies, which is derived from the solutions to the Schrödinger equation.
Step 3
Write the electron configuration (s, p) of an atom of silicon showing the distribution of electrons in atomic orbitals in the ground state.
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Answer
The electron configuration of silicon is written as follows:
1s² 2s² 2p⁶ 3s² 3p².
This configuration indicates that silicon has 14 electrons, distributed among its atomic orbitals.
Step 4
Hence, state how many (i) main energy levels,
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Answer
(i) Silicon has 3 main energy levels.
Step 5
(ii) atomic orbitals,
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Answer
(ii) A total of 8 atomic orbitals are occupied in the silicon atom in its ground state.
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