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Atoms

Most of the a...

Question

Most of the atom's mass and its entire positive charge are confined in a small core, known as ________.

A

electron

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B

nucleus

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C

molecules

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D

element

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Solution

The correct option is B nucleus
Almost all of the mass in an atom is made up from the protons and neutrons in the nucleus with a very small contribution from the orbiting electrons. Neutrons have no charge and protons are positively charged. Because the nucleus is only made up of protons and neutrons it is positively charged.

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