Question:
The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is
The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is
Updated On: Jul 10, 2024
- $Ag$
- $Ca$
- $Cu$
- $Cr$
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
On electrolysis only in case of $Ca ^{2+}$ salt aqueous solution $H _{2}$ gas discharge at Cathode.
Case of $Cr$
At cathode : $Cr ^{3+}+2 e ^{-} \longrightarrow Cr$
So, $Cr$ is deposited.
Case of $Ag$ At cathode : $Ag ^{+}+ e ^{-} \longrightarrow Ag$
So, $Ag$ is deposited.
Case of $Cu$
At cathode : $Cu ^{2+}+2 e ^{-} \longrightarrow Cu$
Case of $Ca ^{2+}$
At cathode $: H _{2} O + e ^{-} \longrightarrow \frac{1}{2} H _{2}+ OH ^{-}$
Was this answer helpful?
0
0
Top Questions on GROUP 2 ELEMENTS
- The correct order of density is
- JEE Main - 2023
- Chemistry
- GROUP 2 ELEMENTS
- Reaction of \(BeCl_2\) with \(LiAlH_4\) gives :
- \(AlCl_3\)
- \(BeH_2\)
- \(LiH\)
- \(LiCl\)
- \(BeAlH_4\)
- JEE Main - 2022
- Chemistry
- GROUP 2 ELEMENTS
- Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution?
- JEE Main - 2022
- Chemistry
- GROUP 2 ELEMENTS
- The structures of beryllium chloride in solid state and vapour phase, are :
- NEET (UG) - 2021
- Chemistry
- GROUP 2 ELEMENTS
- What is the role of gypsum, $CaSO_{4}.2H_{2}O$ in setting of cement ? Identify the correct option from the following :
- NEET (UG) - 2020
- Chemistry
- GROUP 2 ELEMENTS
View More Questions
Questions Asked in JEE Main exam
- In the given circuit if the power rating of Zener diode is 10 mW, the value of series resistance Rs to regulate the input unregulated supply is :
- JEE Main - 2024
- Zener Diodes
- 0.08 kg of air is heated at constant volume through 5°C. The specific heat of air at constant volume is 0.17 kcal/kg°C and \( J = 4.18 \) joule/cal. The change in its internal energy is approximately:
- JEE Main - 2024
- Thermodynamics
- \(^{n-1}C_r = (k^2 - 8) ^{n}C_{r+1}\) if and only if:
- JEE Main - 2024
- Binomial theorem
- If in a G.P. of64terms, the sum of all the terms is 7 times the sum of the odd terms of the G.P., then the common ratio of the G.P. is equal to:
- JEE Main - 2024
- Geometric Progression
- Match List-I with List-II
\[ \begin{array}{|c|c|} \hline \text{List-I (Species)} & \text{List-II (Electronic distribution)} \\ \hline \text{(A) Cr}^{+2} & \text{(I) } 3d^8 \\ \text{(B) Mn}^{+} & \text{(II) } 3d^3 4s^1 \\ \text{(C) Ni}^{+2} & \text{(III) } 3d^4 \\ \text{(D) V}^{+} & \text{(IV) } 3d^5 4s^1 \\ \hline \end{array} \]- JEE Main - 2024
- d And f - Block Elements
View More Questions
Concepts Used:
Group 2 Elements
The group two or alkaline earth metals are s-block elements with two electrons in their s-orbital. They are alkaline earth metals. They are named so because of the alkaline nature of the hydroxides and oxides.
Alkaline earth metals are characterized by two s-electrons. This group of elements includes:
- Beryllium (Be)
- Magnesium (Mg)
- Calcium (Ca)
- Strontium (Sr)
- Barium (Ba)
- Radium (Ra)
Elements whose atoms have their s-subshell filled with their two valence electrons are called alkaline earth metals. Their general electronic configuration is [Noble gas] ns2. They occupy the second column of the periodic table and so-called as group two metals also.