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Selenium (Se) has an atomic number of 34

which means in a balance atom Se will have 34 protons and 34 electrons

then Se has a mass of 79 so to get the neutrons we minus the protons from the mass and we get 45

final answer:

Neutrons: 45

Protons:34

Electrons: 34

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11y ago
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13y ago

An atom's atomic number tells us the number of protons it has in its nucleus. Checking a Periodic Table, we see that selenium/'s atomic number is 34. Thus, there are 34 protons in the nucleus of a selenium atom.

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13y ago

there are 34 protons 43 neutrons in selenium

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11y ago

Selenium has 34 protons, 34 electrons. the number of neutrons depends on the isotope. Se-79 isotope has 45 neutrons (79 - 34 = 45)

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3y ago

34 protons 43 neutrons in selenium

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11y ago

Selenium has 34 electrons.

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11y ago

A selenium atom has 34 protons.

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6y ago

Selenium has 34 protons.

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11y ago

34

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Q: How many protons neutrons and electrons are in a selenium atom?
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