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The correct answer is B. Electrons will be added to an atom starting from the lowest possible level or sublevel.
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Fuel......................................
They can form acids or ‘acid rain’ like nitric acid or sulfuric acid which can damage buildings and structures.
Because they are made up of more than one type of atoms. The periodic table of elements are made up of all elements discovered. Elements are only one type of atom
Answer:
1.
First of all, let's convert the energy of the absorbed photon into Joules:
The energy of the photon can be rewritten as:
where
h is the Planck constant
c is the speed of light
is the wavelength of the photon
Re-arranging the formula, we can solve to find the wavelength of the absorbed photon:
2. 1.24 eV
In this case, when the electron jumps from the n=4 level to the n=3 level, emits a photon with wavelength
So the energy of the emitted photon is given by the formula used previously:
and using
we find
converting into electronvolts,
Explanation:
