Which of the following is a metalloid?
A) Boron
B) Lithium
C) Uranium
D) Tungsten
Correct Answer:
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Q35: The systematic (IUPAC) name of MgI2 is:
A)
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
Q45: Anions are negatively charged species that contain
Q46: Which of the following isotopes has the
Q47: Barium is an alkali metal.
Q48: An _ provides the relative ratio between
Q49: Atoms of the same element that have
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