Basic Atomic Structure Worksheet answer Key

Our current model of the atom can be broken down into three constituents parts – protons, neutron, and electrons. Each of these parts has an associated charge, with protons carrying a positive charge, electrons having a negative charge, and neutrons possessing no net charge.

Atoms of all elements are made up of three basic building blocks, protons, neutrons, and electrons. Protons are positively charged particles, neutrons are uncharged particles, and both are heavy in the subatomic scheme of things.

Therefore, we can conclude that the two particles which account for almost all of the mass of an atom are protons and neutrons.

Name	Lead
Atomic Mass	207.2 atomic mass units
Number of Protons	82
Number of Neutrons	125
Number of Electrons	82

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