Concept explainers
(a)
To determine: If the given element is an alkali metal.
Interpretation: The given element is to be identified as an alkali metal.
Concept introduction: Periodic table is the arrangement of elements in the increasing order of
The group
(b)
To determine: If the given element is an alkali metal.
Interpretation: The given element is to be identified as an alkali metal.
Concept introduction: Periodic table is the arrangement of elements in the increasing order of atomic number. The elements present on the right side of periodic table are nonmetals whereas the elements present on the left side are metals and elements present in between metal and nonmetals are metalloids.
(c)
To determine: If the given element is an alkali metal.
Interpretation: The given element is to be identified as an alkali metal.
Concept introduction: Periodic table is the arrangement of elements in the increasing order of atomic number. The elements present on the right side of periodic table are nonmetals whereas the elements present on the left side are metals and elements present in between metal and nonmetals are metalloids.
(d)
To determine: If the given element is an alkali metal.
Interpretation: The given element is to be identified as an alkali metal.
Concept introduction: Periodic table is the arrangement of elements in the increasing order of atomic number. The elements present on the right side of periodic table are nonmetals whereas the elements present on the left side are metals and elements present in between metal and nonmetals are metalloids.
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