Concept explainers
(a)
Interpretation:
The name, atomic symbol and group number of the element with Z value 33 is to be determined. Also, classify the element as metal, metalloid, and nonmetal.
Concept introduction:
A periodic table is an arrangement of elements based on their
(b)
Interpretation:
The name, atomic symbol and group number of the element with Z value 20 is to be determined. Also, classify the element as metal, metalloid, and nonmetal.
Concept introduction:
A periodic table is an arrangement of elements based on their atomic number, properties and electronic configuration. The table is arranged into groups and periods. The elements which are metallic in nature, occupy the large lower-left portion of the table. The non-metals occupy the small upper-right portion of the table. Metalloids like along the staircase line. Elements which appear in the same group have similar behaviour.
(c)
Interpretation:
The name, atomic symbol and group number of the element with Z value 35 is to be determined. Also, classify the element as metal, metalloid, and nonmetal.
Concept introduction:
A periodic table is an arrangement of elements based on their atomic number, properties and electronic configuration. The table is arranged into groups and periods. The elements which are metallic in nature, occupy the large lower-left portion of the table. The non-metals occupy the small upper-right portion of the table. Metalloids like along the staircase line. Elements which appear in the same group have similar behaviour.
(d)
Interpretation:
The name, atomic symbol and group number of the element with Z value 19 is to be determined. Also, classify the element as metal, metalloid, and nonmetal.
Concept introduction:
A periodic table is an arrangement of elements based on their atomic number, properties and electronic configuration. The table is arranged into groups and periods. The elements which are metallic in nature, occupy the large lower-left portion of the table. The non-metals occupy the small upper-right portion of the table. Metalloids like along the staircase line. Elements which appear in the same group have similar behaviour.
(e)
Interpretation:
The name, atomic symbol and group number of the element with Z value 13 is to be determined. Also, classify the element as metal, metalloid, and nonmetal.
Concept introduction:
A periodic table is an arrangement of elements based on their atomic number, properties and electronic configuration. The table is arranged into groups and periods. The elements which are metallic in nature, occupy the large lower-left portion of the table. The non-metals occupy the small upper-right portion of the table. Metalloids like along the staircase line. Elements which appear in the same group have similar behaviour.

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Chapter 2 Solutions
CHEMISTRY THE MOLECULAR NATURE OF MATTER
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