Chemistry
The valencies shown by copper is:
- 1 and 2
- 2 and 3
- 2 and 4
- 1 and 3
Valency
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Answer
1 and 2
Reason — The valencies shown by copper are 1 and 2.
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Related Questions
Which of the following sets of elements show variable valencies?
- Iron and calcium
- Copper and sodium
- Lead and mercury
- Silver and potassium
Which of the following has zero valency?
- Hydrogen
- Chlorine
- Carbon
- Neon
Which of the following represents the correct symbol of potassium ion ?
- K
- K+
- K2+
- K3+
Assertion (A): When an atom gains one or more electrons, it becomes negatively charged.
Reason (R): The number of electrons in an atom exceeds the number of protons upon gaining electrons.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.