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The atomic number tells you how many protons are in the atomic nucleus. The Atomic Mass is the amount of protons plus the amount of neutrons in the atomic nucleus. So if you take the atomic number and subtract it from the atomic mass, it will give you the number of neutrons in the atomic nucleus.

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13y ago
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15y ago

Refer to the Periodic Table of Elements. An atom's atomic number (generally listed above the element's chemical symbol) is equal to the number of protons in its nucleus.

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12y ago

Yes, protons(positively charged) and neutrons (zero charge) make up the nucleus, while the electrons(negatively charged) are located in 'orbits' around the nucleus.

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11y ago

because they will attract if a negatively charged object is brought close to it since it contains protons which are negatively charged.

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13y ago

Look at the atomic number. The atomic number show the number of protons and electrons. So for Oxygen, there are 8 protons, and 8 neutrons!

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14y ago

because the nucleuse contains, 2 times more matter than the outer shell, the nuclecleus contains, protons and newtrons. and the outershell only contains electrons

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6y ago

The number of protons in the atomic nucleus is equal to the atomic number of an element.

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Q: How do you know protons are found in the nucleus?
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