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What is the mass number of an ion with 109 electrons, 157 neutrons, and a +1 charge?

Zach Chandler

in Chemistry

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Jodi Brooks on December 10, 2018

The mass number can be calculated by using the following rule:the mass number = number of protons + number of neutronswe is the number of neutrons emitted as a 157 neutronsnow for protons, we know that in the neutral state, the number of protons is equal to the number of electrons. Since this ion has a +1 charge, this means that the ion has one more proton than the number of electrons.Therefore, the number of protons = 109 + 1 = 110 protonsSubstituting in the above equation, we can calculate the mass number:mass number = 110 + 157 = 267


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