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Isotopes of the same element always have the same atomic number.
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Q8: Na<sup>+</sup> and F<sup> − </sup> are isoelectronic.
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Q12: The reducing agent is the substance that
Q21: An element in which the distinguishing
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Q49: Which of the following subshells has the
Q52: Tin (Sn)is a representative element.
Q75: Which of the following is a chemical
Q94: Which of the following pairs of gases