SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If an element has an atomic no. of 8 and has 8 neutrons, what is it’s atomic mass?
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18
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0
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4
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16
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Explanation:
Detailed explanation-1: -Explanation: Since oxygen has 8 protons and 8 neutrons, the atomic mass of oxygen is 16, which is the sum of protons and neutrons.
Detailed explanation-2: -Answer 8: An oxygen atom usually has 8 protons, 8 neutrons, and 8 electrons. Looking at the periodic table, oxygen has atomic number 8 and atomic weight 15.999. The atomic number tells you how many protons are in the atom’s nucleus.
Detailed explanation-3: -Oxygen atom has an atomic mass of 16u and eight neutrons in its nucleus.
Detailed explanation-4: -The average oxygen atom has a mass number of 16 and an atomic number of 8.
Detailed explanation-5: -Hence, the mass number of an oxygen atom = 8 + 8 = 16.
There is 1 question to complete.