what is the particle nature of light?
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The emission of free electrons from a metal surface when the light is shone on it, it is called the photoemission or the photoelectric effect. This effect led to the conclusion that light is made up of packets or quantum of energy.
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In an H2S molecule, three atoms are present; two of hydrogen and one of sulphur. (ii) In a PO43-ion, five atoms are present; one of phosphorus and four of oxygen.
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