(a)
Interpretation:Atomic size of thegiven set of elements
Concept introduction:Arrangement of all existing elements in the order of their
Atomic size is the distance in
(a)
Answer to Problem 57A
Correct order of atomic size for the elements in increasing order is
Explanation of Solution
On moving horizontally from group 1 to group 18 in periodic table, atomic size of elements trends in decreasing order. Reason for this trend is that with increase in atomic number(Z), number of electron that enter into same shell keeps on increasing. In addition to it, there is an increase in nuclear charge too which pull the valence electrons closer to it. Hence atomic size decreases.
On moving below from row 1 to row 7, atomic size show increasing trend due to addition of 1 new shell with each new row. Hence the nuclear pull decreases on valence shell and atomic size increases.
(b)
Interpretation: Atomic size of the given set of elements
Concept introduction: Arrangement of all existing elements in the order of their atomic numbers leads to formation of periodic table. There are total of 18 vertical groups or columns and 7 periods or rows in the periodic table. This arrangement of elements explains a lot of their properties such as atomic size.
Atomic size is the distance in
(b)
Answer to Problem 57A
Correct order of atomic size for the elements in increasing order is
Explanation of Solution
On moving horizontally from group 1 to group 18 in periodic table, atomic size of elements trends in decreasing order. Reason for this trend is that with increase in atomic number, number of electron that keeps on increasing, enter into same shell. Whereas there is an increase in nuclear charge too which pull the valence electrons closer to it. Hence atomic size decreases.
On moving below from row 1 to row 7, atomic size show increasing trend due to addition of 1 new shell with each new shell. Hence the nuclear pull decreases on valence shell and atomic size increases.
(c)
Interpretation: Atomic size of the given set of elements
Concept introduction: Arrangement of all existing elements in the order of their atomic numbers leads to formation of periodic table. There are total of 18 vertical groups or columns and 7 periods or rows in the periodic table. This arrangement of elements explains a lot of their properties such as atomic size.
Atomic size is the distance in
(c)
Answer to Problem 57A
Correct order of atomic size for the elements in increasing order is
Explanation of Solution
On moving horizontally from group 1 to group 18 in periodic table, atomic size of elements trends in decreasing order. Reason for this trend is that with increase in atomic number, number of electron that keeps on increasing, enter into same shell. Whereas there is an increase in nuclear charge too which pull the valence electrons closer to it. Hence atomic size decreases.
On moving below from row 1 to row 7, atomic size show increasing trend due to addition of 1 new shell with each new shell. Hence the nuclear pull decreases on valence shell and atomic size increases.
Chapter 11 Solutions
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