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Question

Atomic numbers for the following semiconducting and doping materials like Ga, In, As, Sb are respectively :

A. 33

B. 49

C. 31

D. 51

Choose the correct answer from the options given below :

This question was previously asked in
UGC NET 2023 Electronic Science Question Paper (13-Dec-2023) (Shift 1)
The correct answer is

C$\longrightarrow$ B$\longrightarrow$ A$\longrightarrow$ D

To determine the correct order of atomic numbers for the elements Gallium (Ga), Indium (In), Arsenic (As), and Antimony (Sb), we need to first identify their atomic numbers:

  1. \(Gallium\ (Ga)\) has an atomic number of 31.
  2. \(Indium\ (In)\) has an atomic number of 49.
  3. \(Arsenic\ (As)\) has an atomic number of 33.
  4. \(Antimony\ (Sb)\) has an atomic number of 51.

Given this information, we can classify these elements by their atomic numbers as follows:

  • \(C \longrightarrow 31 \, (Ga)\)
  • \(B \longrightarrow 49 \, (In)\)
  • \(A \longrightarrow 33 \, (As)\)
  • \(D \longrightarrow 51 \, (Sb)\)

Now, let's match these numbers with the provided options:

  • Option 1: B → C → D → A (Incorrect)
  • Option 2: A → D → B → C (Incorrect)
  • Option 3: C → A → B → D (Incorrect)
  • Option 4: C → B → A → D (Correct)

Thus, the correct order based on atomic numbers is C → B → A → D.

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