GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If an atom has 5 protons and 4 electrons, what is its charge?
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Neutral
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Positive
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Negative
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Unknown
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Explanation:
Detailed explanation-1: -4 protons, 5 neutrons, and 4 electrons are there in an atom of beryllium.
Detailed explanation-2: -Hence the atomic mass number of beryllium will be the sum of 4 protons and 5 neutrons and that will be equal to 9.
Detailed explanation-3: -The atomic mass is expressed by the number of massive particles, protons, and neutrons, and since we have 5 neutrons, the isotope is 9Be . Finally we can assign the charge. There are 4 protonic charges, and 4 electronic charges: the isotope is neutral.
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