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

Respuesta :

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

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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