Write the electron arrangement for the atom shown.
-The symbol for sodium is ________.
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Q56: Isotopes are atoms of the same element
Q57: The atomic mass of an element is
Q58: How many valence electrons are in the
Q59: Which of the following gives the correct
Q60: The number of valence electrons found in
Q62: Ionization energy is _.
A)the energy an ion
Q63: Write the electron arrangement for the atom
Q64: Write the electron arrangement for the atom
Q65: The ionization energy of atoms _.
A)decreases going
Q66: The metallic character of elements _.
A)increases going
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