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How do elements differ going from left to right across a period on the periodic table? please choose one They become more valuable. They become lighter. They become more radioactive. Their atomic number
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How do elements differ going from left to right across a period on the periodic table?

please choose one
They become more valuable.

They become lighter.

They become more radioactive.

Their atomic number increases.

User Mseddon
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1 Answer

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their atomic number increases
User Grimmig
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