lukeydan49 lukeydan49
  • 03-08-2018
  • Biology
contestada

The element calcium has the atomic number of 20 and the mass number of 40, how many neutrons dose it have

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PunIntended
PunIntended PunIntended
  • 03-08-2018

The mass number is the sum of the number of protons and number of neutrons the atom has.

So, we can write the equation as:

x + 20 = 40

x = 20 neutrons.

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bossypants12345
bossypants12345 bossypants12345
  • 03-08-2018

Calcium's atomic number is 20, which means all calcium atoms have 20 protons in their nuclei. However, the number of neutrons in the nuclei of the calcium atoms can vary.

Hope this helps a little.

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