14-05-2016
Chemistry

contestada

if element x has 55 protons how many electrons does it have

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courtneyramsey7 courtneyramsey7

14-05-2016

If the element has 55 protons it is celcium and it also has 55 electrons. It has an atomic mass of 133 (132.9) so to get the number of neutrons you subtract the atomic mass and the number of protons.

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kobenhavn kobenhavn

05-01-2019

Answer: 55

Explanation: A atom consists of a nucleus and electrons.Nucleus contain neutrons with no charge and protons with positive charge. The electrons bearing negative charge revolve around the nucleus.

An electrically neutral atom contains equal number of protons and electrons. Thus if a neutral element X contains 55 protons, it also contains 55 electrons.

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