https://education.jlab.org/qa/pen_number.html

How many protons, electrons and neutrons are in an atom of krypton, carbon, oxygen, neon, silver, ... Atoms must have equal numbers of protons and electrons .

https://chemed.chem.purdue.edu/genchem/topicreview/bp/ch6/index.php

The number of protons, neutrons, and electrons in an atom can be determined ... The number of electrons in a neutral atom is equal to the number of protons.

http://www.middleschoolchemistry.com/lessonplans/chapter4/lesson1

Proton—positive; electron—negative; neutron—no charge. The charge on the proton and electron are exactly the same size but opposite. The same number of  ...

http://wtamu.edu/~cbaird/sq/2013/06/07/why-do-atoms-always-contain-the-same-number-of-electrons-and-protons/

Jun 7, 2013 ... Atoms do not always contain the same number of electrons and protons, although this state is common. When an atom has an equal number of ...

https://socratic.org/questions/why-is-the-number-of-protons-and-electrons-equal-in-an-atom

Apr 8, 2014 ... Actually the proton and electron count of an atom are equal only when the atom is neutral in charge. The three atomic particles of an atom are ...

https://socratic.org/questions/how-do-you-find-the-number-of-protons-and-neutrons-and-electrons-of-a-particular

Oct 22, 2016 ... Your mass number is the total number of neutrons and protons ... For neutral atoms, the electron number is the same as the atomic number.

https://www.livescience.com/37206-atom-definition.html

Aug 8, 2017 ... However, one proton weighs more than 1,800 electrons. Atoms always have an equal number of protons and electrons, and the number of ...

https://www.quora.com/Do-atoms-have-the-same-number-of-electrons-and-neutrons

A neutrally charge atom will have equal numbers of protons and electrons. If the atom is an ion it will have gained or lost an electron so the ...

https://www.youtube.com/watch?v=G3ImfVYSxoc

Sep 6, 2014 ... Thank you, I have been trying to study for my exam and I completely forget this and didnt want to dig through stacks of paper. Read more.

https://opentextbc.ca/geology/chapter/2-1-electrons-protons-neutrons-and-atoms/

For most of the 16 lightest elements (up to oxygen) the number of neutrons is equal to the number of protons. For most of the remaining elements, there are more ...