Middleschool12K Middleschool12K

29-09-2021
Chemistry

contestada

What is the composition of an isotope of calcium (atomic number 20)?

21 protons, 20 neutrons, 20 electrons

20 protons, 25 neutrons, 20 electrons

22 protons, 20 neutrons, 19 electrons

19 protons, 20 neutrons, 19 electrons

Respuesta :

mohammed1819049 mohammed1819049

30-09-2021

Answer:

The second one

Explanation:

Because the isotopes have the same number of protons and different number of neutrons compared with the original element

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