Use the terms atom and element to explain what makes silver and gold different

1 answer:

3 0

An element is a substance made of many atoms of the same kind. Silver and gold are different elements, for the following reason:
- silver is an element whose atoms have atomic number 47 (i.e., an atom of silver contains 47 protons and 47 electrons)
<span>- gold is an element whose aroms have atomic number 79 (i.e., an atom of gold contains 79 protons and 79 electrons)</span>

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Approximating the eye as a single thin lens 2.70 cmcm from the retina, find the focal length of the eye when it is focused on an

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Answer:

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Explanation:

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