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Number of elements that generally do not show variable valencies Cu, Zn Au, Cd, Sc, La, Pt, Co.
Correct answer is '4'. Can you explain this answer?
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Number of elements that generally do not show variable valencies Cu, Z...
Zn, Cd, Sc and La do not show variable valencies.
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Number of elements that generally do not show variable valencies Cu, Z...
Elements with Variable Valencies
Variable valency refers to the ability of an element to exhibit different valencies or oxidation states in different chemical compounds. Some elements commonly exhibit variable valencies, while others usually have a fixed valency.
Elements with Fixed Valencies
There are certain elements that generally show fixed or constant valencies. These elements include:
1. Copper (Cu) - Copper typically exhibits a valency of +2.
2. Zinc (Zn) - Zinc usually has a valency of +2.
3. Gold (Au) - Gold typically has a valency of +3.
4. Cadmium (Cd) - Cadmium usually exhibits a valency of +2.
Elements with Variable Valencies
However, there are several elements that commonly show variable valencies. These elements include:
1. Scandium (Sc) - Scandium can exhibit valencies of +2 and +3.
2. Lanthanum (La) - Lanthanum commonly exhibits a valency of +3.
3. Platinum (Pt) - Platinum can have valencies of +2, +4, and +6.
4. Cobalt (Co) - Cobalt typically shows valencies of +2 and +3.
Number of Elements with Fixed Valencies
Based on the given elements, the number of elements that generally do not show variable valencies is 4. These elements are:
1. Copper (Cu) - Fixed valency of +2.
2. Zinc (Zn) - Fixed valency of +2.
3. Gold (Au) - Fixed valency of +3.
4. Cadmium (Cd) - Fixed valency of +2.
Therefore, the correct answer is '4'.
Variable valency refers to the ability of an element to exhibit different valencies or oxidation states in different chemical compounds. Some elements commonly exhibit variable valencies, while others usually have a fixed valency.
Elements with Fixed Valencies
There are certain elements that generally show fixed or constant valencies. These elements include:
1. Copper (Cu) - Copper typically exhibits a valency of +2.
2. Zinc (Zn) - Zinc usually has a valency of +2.
3. Gold (Au) - Gold typically has a valency of +3.
4. Cadmium (Cd) - Cadmium usually exhibits a valency of +2.
Elements with Variable Valencies
However, there are several elements that commonly show variable valencies. These elements include:
1. Scandium (Sc) - Scandium can exhibit valencies of +2 and +3.
2. Lanthanum (La) - Lanthanum commonly exhibits a valency of +3.
3. Platinum (Pt) - Platinum can have valencies of +2, +4, and +6.
4. Cobalt (Co) - Cobalt typically shows valencies of +2 and +3.
Number of Elements with Fixed Valencies
Based on the given elements, the number of elements that generally do not show variable valencies is 4. These elements are:
1. Copper (Cu) - Fixed valency of +2.
2. Zinc (Zn) - Fixed valency of +2.
3. Gold (Au) - Fixed valency of +3.
4. Cadmium (Cd) - Fixed valency of +2.
Therefore, the correct answer is '4'.
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Number of elements that generally do not show variable valencies Cu, Zn Au, Cd, Sc, La, Pt, Co.Correct answer is '4'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Number of elements that generally do not show variable valencies Cu, Zn Au, Cd, Sc, La, Pt, Co.Correct answer is '4'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Number of elements that generally do not show variable valencies Cu, Zn Au, Cd, Sc, La, Pt, Co.Correct answer is '4'. Can you explain this answer?.
Number of elements that generally do not show variable valencies Cu, Zn Au, Cd, Sc, La, Pt, Co.Correct answer is '4'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Number of elements that generally do not show variable valencies Cu, Zn Au, Cd, Sc, La, Pt, Co.Correct answer is '4'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Number of elements that generally do not show variable valencies Cu, Zn Au, Cd, Sc, La, Pt, Co.Correct answer is '4'. Can you explain this answer?.
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