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On the periodic table, a column of elements is called a(n)
Their atoms gain only one electron to have a complete outer level.
hydrogen
elements as metals, nonmetal, or metalloids
the same number of electrons in their outer energy level as
18
transition metals
noble gases
group or family
Why are halogens considered to be the most reactive group of nonmetals?
Their atoms gain only one electron to have a complete outer level.
hydrogen
elements as metals, nonmetal, or metalloids
the same number of electrons in their outer energy level as
18
transition metals
noble gases
group or family
The periodic table has _____ groups.
Their atoms gain only one electron to have a complete outer level.
hydrogen
elements as metals, nonmetal, or metalloids
the same number of electrons in their outer energy level as
18
transition metals
noble gases
group or family
Groups 3-12 are commonly referred to as
Their atoms gain only one electron to have a complete outer level.
hydrogen
elements as metals, nonmetal, or metalloids
the same number of electrons in their outer energy level as
18
transition metals
noble gases
group or family
Atoms of elements in Groups 1 and 2 have ____ their group number.
Their atoms gain only one electron to have a complete outer level.
hydrogen
elements as metals, nonmetal, or metalloids
the same number of electrons in their outer energy level as
18
transition metals
noble gases
group or family
Which of the following grops have a complete set of electrons in their outer shell?
Their atoms gain only one electron to have a complete outer level.
hydrogen
elements as metals, nonmetal, or metalloids
the same number of electrons in their outer energy level as
18
transition metals
noble gases
group or family
The zigzag line on the periodic table halps you identify
Their atoms gain only one electron to have a complete outer level.
hydrogen
elements as metals, nonmetal, or metalloids
the same number of electrons in their outer energy level as
18
transition metals
noble gases
group or family
The most abundant element in the universe is
Their atoms gain only one electron to have a complete outer level.
hydrogen
elements as metals, nonmetal, or metalloids
the same number of electrons in their outer energy level as
18
transition metals
noble gases
group or family
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