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An atom of an element contains 20 protons, 20 neutrons, and 20 electrons. This element is in Group *
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An atom of an element contains 20 protons, 20 neutrons, and 20 electrons. This element is in Group *

User Reid Mac
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5 votes

Answer:

  • calcium
  • it lies in group(IIA)

hope it is helpful to you

User Nurettin
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3 votes

Answer:

it is calcium. it is in group(llA).

User FelixHJ
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