Question

When two dissimilar metals are electrically connected, then more active metal becomes.

cathode and gets protected
cathode and undergoes corrosion
Anode and gets protected
Anode and gets corroded​

Answer 1

Answer:

1) Like alkali metals hydrogen has one electron in its valency shell. 2) Valance shell electronic configurations of hydrogen and alkali metal are same.

Explanation:

100% correct answer

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Answer 2

When two dissimilar metals are electrically connected, then more active metal becomes anode and gets protected.

• When two dissimilar metals are electrically connected, a galvanic cell is formed, which can result in the corrosion of the more active (anodic) metal. The more active metal will act as an anode and undergoes corrosion, while the less active metal will act as a cathode and get protected.
• Galvanic corrosion and bimetallic corrosion are other names for this process. The corrosion occurs due to the difference in the electrochemical potential of the two metals, which causes a flow of electrons from the more active metal (anode) to the less active metal (cathode). This flow of electrons leads to the corrosion of the anode and the protection of the cathode.

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