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Svetlanka [38]
2 years ago
11

Please explain how we judge the brightness of stars.

Chemistry
1 answer:
11111nata11111 [884]2 years ago
6 0
Astronomers can measure it by way of luminosity which is the power of a star or the amount of energy (light) the star admits from its surface. they also measure the brightness of a start as if it were to appear 32.6 light years from Earth
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Consider the set of isoelectronic atoms and ions a2–, b–, c, d+, and e2+. which arrangement of relative radii is correct?
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Answer:

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Explanation:

4 0
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Which occurs whenever valence electrons are shared or transferred between atoms?
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