An isotope of this element having 20 neutrons has a mass number of
Question
An isotope of this element having 20 neutrons has a mass number of
Solution
The mass number of an isotope is the sum of the number of protons and neutrons in its nucleus. If an isotope of this element has 20 neutrons and the mass number is 40, then the number of protons in the isotope must be 20 (because 40-20=20). The element with 20 protons is calcium.
Similar Questions
An unknown element has 19 electrons and 20 neutrons, what is the mass number of this element?
Any of the two or more atoms of the same element that have different numbers of neutrons
hat is the mass number of the xenon isotope with neutrons?
Isotopes of an element have different mass numbers. Complete the sentence to explain why. Because they have different numbers of:neutronsprotonselectrons
Isotopes of the same element have different?Aatomic numbersBnumbers of neutronsCnumbers of electronsDnumbers of protons
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.