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Displaying 5 out
of 89
questions & answers.
Q1.
Define the term atomic number.
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Answer:
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The atomic number is the number by which the number of the protons in the atom is represented.
Q2.
Define the term mass number.
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The mass number of an atom is the total number of protons and neutrons collectively called nucleons in the nucleus of the atom.
Q3.
Define the term electron.
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answer not shownQ4.
From the symbol 42He for the element helium, write down the mass number and the atomic number of the element.
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The mass number of helium is 4 and the atomic number of helium is 2.
Q5.
Sulphur has an atomic number of 16 and a mass number of 32. State the number of protons and neutrons present in the nucleus of sulphur.
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Answer:
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The number of protons in the nucleus of sulphur is 16.
The number of neutron in the nucleus of sulphur is 16.
