Structure of the atom Worksheet-10
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J.J. Thomson proposed that the nucleus of an atom contains only nucleons.
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A neutron is formed by an electron and proton combining together. Therefore, it is neutral.
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The mass of an electron is about 1/2000 times that of proton.
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An isotope of iodine is used for making tincture of iodine, which is used as medicine.
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Alpha particles have twice the mass as that of protons.
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The atom as a whole is electrically neutral.
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The nucleus of the atom is light.
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Electrons in the extra nuclear portion are stationary.
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While revolving around the nucleus, the electrons do not radiate any energy.
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Chemical properties of an element depend upon mass numbers and not atomic numbers.
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Isotopes of an element are chemically similar.
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In an neutral atom, the atomic number is equal to the number of electrons.
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All isotopes of an element are of radioactive nature.
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The valence shell of an atom can have any number of electrons.
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The valency of an element with configuration 2 and 7 is 1.
Answer:
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False
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False
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True
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False
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False
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True
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False
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False
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True
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False
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True
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True
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False
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False
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True