Determine the number of protons, neutrons, and electron for the element Calcium.

Question

Determine the number of protons, neutrons, and electron for the element Calcium. The mass number for the isotope of this element is 42. You must show your work for each determination to receive credit





Determine the number of protons, neutrons, and electron for the element Calcium. The mass number for the isotope of this element is 42. You must show your work for each determination to receive credit





Determine the number of protons, neutrons, and electron for the element Calcium. The mass number for the isotope of this element is 42. You must show your work for each determination to receive credit

Explanation / Answer

Isotopes are atoms with the same number of protons but that have a different number of neutrons. Since the atomic number is equal to the number of protons and the atomic mass is the sum of protons and neutrons, we can also say that isotopes are elements with the same atomic number but different mass numbers.

e.g.: Isotope of calcium: 20Ca40 and 20Ca42

20Ca40: No. Of electron=No. Of proton= 20

No.of neutron = Mass no.-no. of proton = 40-20=20

20Ca42:

No. Of electron=No. Of proton= 20

No.of neutron = Mass no.-no. of proton = 42-20=22

  

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