The answer is D because one of them is sharing their electrons with the other.
Answer:
Option (A) Each Zn atom loses 2 electrons, and each Co2+ ion gains 2
Explanation:
To know the right answer to the question, let us observe the changes in the oxidation number of Zn and Co. This is illustrated below:
Zn(s) + Co2+(aq) → Zn2+(aq) + Co(s)
The oxidation number of Zn changes from 0 to +2 indicating that Zn has lose 2 electrons.
The oxidation number of Co changes from +2 to 0 indicating that Co has gain 2 electrons.
Therefore, option A is the correct answer.
UV rays, gamma rays, and x rays
Hope this help
Answer:
B. Mechanical waves must travel through a medium, but electromagnetic waves do not require a medium.
Explanation:
A wave is defined as any disturbance that transmits energy from one point to another.
Waves can be typically classified as either mechanical or electromagnetic waves.
Mechanical waves are waves that requires a medium for their propagation. In a vacuum, they cannot be propagated and would not cause any disturbance. An example is sound waves.
Electromagnetic waves do not require a medium to be propagated. They can pass through any substance in nature. Electromagnetic radiations belongs to this class.