Mariaeugeniaferminre Mariaeugeniaferminre

02-11-2020
Chemistry

contestada

What is the symbol of the element that has a mass number of 140 with 82 neutrons?

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07-11-2020

Answer:

Cerium-140 (Ce)

Explanation:

Cerium-140 has 52 protons and 82 neutrons and is stable.

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