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12 December, 01:30

If an element has 6 electrons, how many of them will be in the 2nd energy level?

How many neutrons does element X have if its atomic number is 54 and its mass number is 163?

If element X has 106 protons, how many electrons does it have?

An element's atomic number is 29. How many protons would an atom of this element have?

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Answers (1)
  1. 12 December, 05:02
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    1st question answer is 2

    2nd question answer is 77

    3rd question answer is 106

    4th question answer is 29
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