(a)
Interpretation:
The group, period and the metallic character of element should be identified.
Concept introduction:
The periodic table is given below,
Figure 1
The electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals.
Metal:
A metal is a material that, when freshly prepared, polished, or fractured, has a shiny appearance. Metal has the capacity to conducts the electricity and heat. Metals are malleable or ductile.
Non-metal:
Non-metal is an element that mostly absences metallic character.
Metalloid:
Metalloid is one of the types of chemical element, which has properties in between, or that are a mixture of metals and nonmetals.
Alkali metals:
Alkali metals are a group (column) in the periodic table is lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr).
Alkaline earth metals:
Alkaline earths metals are group two of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
(b)
Interpretation:
The group, period and the metallic character of element should be identified.
Concept introduction:
The periodic table is given below,
The electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals.
Metal:
A metal is a material that, when freshly prepared, polished, or fractured, has a shiny appearance. Metal has the capacity to conducts the electricity and heat. Metals are malleable or ductile.
Non-metal:
Non-metal is an element that mostly absences metallic character.
Metalloid:
Metalloid is one of the types of chemical element, which has properties in between, or that are a mixture of metals and nonmetals.
Alkali metals:
Alkali metals are a group (column) in the periodic table is lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr).
Alkaline earth metals:
Alkaline earths metals are group two of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
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