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(a)
Interpretation:
Whether the ion is a positive or negative ion needs to be determined.
Concept introduction:
The atomic radius of a particular element is the measure of the atoms size. It can also be defined as the distance between the nucleus of the element to its boundary.
Answer to Problem 66A
A is a negative ion.
Explanation of Solution
An atom forms an anion when it gains an electron. After forming an anion, the atomic size increases. Since, A has greater size than B thus, ion A is a negative ion.
(b)
Interpretation:
The order of the element in period of the periodic table needs to be determined.
Concept introduction:
Ionic radius can be defined as the radius of the ion in an atom. The atomic radius of a particular element is the measure of the atoms size. It can also be defined as the distance between its boundary and nucleus of the element
(b)
Answer to Problem 66A
A is to the left of B on the periodic table.
Explanation of Solution
On moving from left to right across a period, the atomic radius decreases.
From given diagram, it is clear that A has a larger radius. So, A is to the left of B on the periodic table.
(c)
Interpretation:
The order of the element in group of the periodic table needs to be determined.
Concept introduction:
The atomic radius of a particular element is the measure of the atoms size. It can also be defined as the distance between the nucleus of the element to its boundary.
(c)
Answer to Problem 66A
The position of A is below B in the group.
Explanation of Solution
On moving down a group, the atomic or ionic radius increases. From given diagram, A has a larger radius. Hence, A is present at down of B in the group on the periodic table.
Chapter 6 Solutions
Chemistry: Matter and Change
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