GROWTH DEVELOPMENT CHILD
FORMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How many electrons are in the nucleus of an atom with an atomic number of 27?
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27
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0
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59
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None of the above
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Explanation:
Detailed explanation-1: -Hence, number of electrons = 13 Q. An element ‘X’ has atomic mass number = 27.
Detailed explanation-2: -The number of electrons: The number of electrons in any neutral atom is equal to the number of protons in the same atom, so, in Aluminium-27, the number of electrons is 13 .
Detailed explanation-3: -Therefore, the number of neutrons is equal to 27 protons and neutrons minus 13 protons, which we can simplify to 27 minus 13 which gives us 14 neutrons.
Detailed explanation-4: -Cobalt is a chemical element with symbol Co and atomic number 27. Classified as a transition metal, Cobalt is a solid at room temperature.
There is 1 question to complete.