Isotopes, Ionic Compounds, and Average Atomic Mass - Angela LEIGH Nardiello | Library

Instructions

You may use your notebooks and any notes/work papers you want to use.

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Different isotopes of the same element have different–

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An isotope of selenium has 34 protons and 46 neutrons. What is the mass number of this isotope?

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What property is different in different isotopes of the same element?

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Element X has 3 naturally occurring isotopes. The first isotope has an atomic mass of 28.0 amu and a natural abundance of 14.0%. The second isotope has an atomic mass of 29.0 amu and a natural abundance of 66.0%. The third isotope has an atomic mass of 27.4 amu. What is the atomic mass of element X?

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Element X has 2 naturally occurring isotopes. Its first isotope has an atomic mass of 40.00 amu and a natural abundance of 97.41%. Its second isotope has an atomic mass of 41.10 amu. What is the atomic mass of element X?

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Which of the following is true about a calcium atom (Mg) and a calcium ion (Mg2+)?

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Which of the following ions has the largest radius?

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Atoms are __________because they have the same number of protons and electrons. However, based on valence electrons, some atoms will easily gain or lose electrons to other atoms in order to achieve noble gas electronic structure. __________ are atoms that have gained or lost electrons.  Atoms that have __________electrons have a positive charge and are called __________.  Atoms that have __________electrons have a negative charge and are called __________.

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