Question:
Out of the following impurities, which impurity is not a trivalent?
Out of the following impurities, which impurity is not a trivalent?
Show Hint
Mnemonic for Trivalent: \textbf{B-Al-Ga-In} (BAGI).
Mnemonic for Pentavalent: \textbf{P-As-Sb-Bi} (PASB).
Mnemonic for Pentavalent: \textbf{P-As-Sb-Bi} (PASB).
Updated On: Mar 29, 2026
- Aluminium (Al)
- Antimony (Sb)
- Indium (In)
- Boron (B)
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Doping semiconductors involves adding impurities. Trivalent impurities (Group 13) create P-type semiconductors, while Pentavalent impurities (Group 15) create N-type.
Step 2: Detailed Explanation:
* Trivalent (3 valence electrons): Boron (B), Aluminium (Al), Gallium (Ga), Indium (In). * Pentavalent (5 valence electrons): Phosphorus (P), Arsenic (As), Antimony (Sb), Bismuth (Bi). Antimony belongs to Group 15 and is therefore pentavalent.
Step 3: Final Answer:
The correct option is (b).
Doping semiconductors involves adding impurities. Trivalent impurities (Group 13) create P-type semiconductors, while Pentavalent impurities (Group 15) create N-type.
Step 2: Detailed Explanation:
* Trivalent (3 valence electrons): Boron (B), Aluminium (Al), Gallium (Ga), Indium (In). * Pentavalent (5 valence electrons): Phosphorus (P), Arsenic (As), Antimony (Sb), Bismuth (Bi). Antimony belongs to Group 15 and is therefore pentavalent.
Step 3: Final Answer:
The correct option is (b).
Was this answer helpful?
0
0
Top Questions on Semiconductor electronics: materials, devices and simple circuits
The given circuit works as:
- JEE Main - 2026
- Physics
- Semiconductor electronics: materials, devices and simple circuits
- If the output frequency of a full-wave rectifier is 100 Hz, then input frequency will be ______.
- GUJCET - 2026
- Physics
- Semiconductor electronics: materials, devices and simple circuits
- When a forward bias is applied to a p-n junction. It ______.
- GUJCET - 2026
- Physics
- Semiconductor electronics: materials, devices and simple circuits
- The correct truth table for the given input data of the following logic gate is:
- JEE Main - 2026
- Physics
- Semiconductor electronics: materials, devices and simple circuits
Assuming in forward bias condition there is a voltage drop of \(0.7\) V across a silicon diode, the current through diode \(D_1\) in the circuit shown is ________ mA. (Assume all diodes in the given circuit are identical)
- JEE Main - 2026
- Physics
- Semiconductor electronics: materials, devices and simple circuits
View More Questions
Questions Asked in GUJCET exam
- The Wheatstone bridge is in balanced condition in the given figure (assume branches are 2$\Omega$, 6$\Omega$, X, and 12$\Omega$ in order), then X = ______.
- GUJCET - 2026
- Current electricity
- An electric dipole of dipole moment $\vec{P}$ is placed parallel to the uniform electric field of intensity $\vec{E}$. On rotating it through angle of 90° from this situation, the amount of work done is ______.
- GUJCET - 2026
- Electrostatics
- A closely wound solenoid of 800 turns and area of cross section $2.5 \times 10^{-4}$ m$^2$ can carry a current of 3.0 A. The magnetic moment associated with it is ______.
- GUJCET - 2026
- Magnetism and matter
- The dimensional formula of $\frac{B^2}{2\mu_0}$ is ______.
- GUJCET - 2026
- Electromagnetic induction
- The radius of the innermost electron orbit of a hydrogen atom is $5.3 \times 10^{-11}$ m. What is the radius of the $n=3$ orbit?
View More Questions