(a)
Interpretation:
Whether Lithium is a representative element or a transition element needs to be identified.
Concept introduction:
The elements present in both s-block and p-block of the periodic table except noble gases are termed as representative elements. There are two groups in s-block, group I and II and five groups in p-block excluding noble gas, Group 13 to17.
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Answer to Problem 4SSC
Lithium is a representative element.
Explanation of Solution
Lithium is the element of
(b)
Interpretation:
Whether Platinum is a representative element or a transition element needs to be determined.
Concept introduction:
(b)
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Answer to Problem 4SSC
Platinum is a transition element.
Explanation of Solution
Platinum is the element present in group 10 and 6th period of the periodic table. Its atomic number is 78. As it belongs to group 10, it is a d-block element. d-block elements are called as transition metals. So, platinum is a transition element.
(c)
Interpretation:
Whether Promethium is a representative element or a transition element needs to be determined.
Concept introduction:
The elements that belong to the f-block of the periodic table are known as inner transition elements because they form transition series within the transition elements of d-block of the periodic table.
(c)
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Answer to Problem 4SSC
Promethium is an inner transition element.
Explanation of Solution
The f-block contains two types of elements, lanthanoids and actinoids. Promethium is the element of atomic number 61 and it belongs to the lanthanoids of f-block of the periodic table. All the f-block elements are termed as inner transition elements.
(d)
Interpretation:
Whether Carbon is a representative element or a transition element needs to be determined.
Concept introduction:
The elements present in both s-block and p-block of the periodic table except noble gases are termed as representative elements. There are two groups in s-block, group I and II and five groups in p-block excluding noble gas, Group 13 to17.
(d)
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Answer to Problem 4SSC
Carbon is a representative element.
Explanation of Solution
Carbon is an element present in group 14 and 2nd period. Its atomic number is 6. As carbon belongs to group 14, it means it belongs to p-block of the periodic table. So, Carbon is a representative element.
Chapter 6 Solutions
Chemistry: Matter and Change
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