An Element Has an Atomic Number of 78

question 14

Multiple Choice

An element has an atomic number of 78. The number of protons and electrons in a neutral atom of the element are

• A) 156 protons and 78 electrons.
• B) 39 protons and 39 electrons.
• C) 78 protons and 0 electrons.
• D) 78 protons and 78 electrons.
• E) 78 protons and 39 electrons.

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