An _____ provides the relative ratio between the numbers of atoms of the different elements present in a compound.
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Q40: How many electrons are present in 40Ca2+?
A)40
B)38
C)20
D)18
Q41: When electrons are shared between pairs of
Q43: The ratio of isotopes for a given
Q43: The atomic mass of an atom is
Q44: Which of the following is a metalloid?
A)Boron
B)Lithium
C)Uranium
D)Tungsten
Q45: Anions are negatively charged species that contain
Q46: Which of the following isotopes has the
Q47: Barium is an alkali metal.
Q49: Atoms of the same element that have
Q50: Potassium has two stable isotopes: 39
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