Concept explainers
(a)
Interpretation:
The
Concept introduction:
The periodic table represents elements in order of their
(b)
Interpretation:
The symbol of the element which is semimetal in the fourth period and Group
Concept introduction:
The periodic table represents elements in order of their atomic number. In the modern periodic table, the horizontal rows are known as periods and vertical columns are known as groups. There are seven periods and eighteenth groups in modern periodic table.
(c)
Interpretation:
The symbol of the halogen which exists as reddish-brown liquid is to be stated.
Concept introduction:
The periodic table represents elements in order of their atomic number. In the modern periodic table, the horizontal rows are known as periods and vertical columns are known as groups. There are seven periods and eighteenth groups in modern periodic table.
(d)
Interpretation:
The symbol of the radioactive noble gas is to be stated.
Concept introduction:
The periodic table represents elements in order of their atomic number. In the modern periodic table, the horizontal rows are known as periods and vertical columns are known as groups. There are seven periods and eighteenth groups in modern periodic table.
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