Gadolinium has 93 neutrons, and this number is figured by using the equation which states that neutrons plus protons equal the atomic mass. Use chemistry equations to determine the amount of neutrons that an element has withhelp from a science teacher and field biologist in this free video on chemistry. Expert: Brian Erickson Contact: Ericksontutoring.blogspot.com Bio: Brian Erickson is a tutor in math and science, as well as a field biologist. Filmmaker: Todd Green

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