WBJEE · Chemistry · Structure of Atom
An element belongs to Group 15 and third period of the periodic table. Its electonic configuration will be
- A \(1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^3\)
- B \(1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^4\)
- C \(1 s^2 2 s^2 2 p^6 3 s^2 3 p^3\)
- D \(1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^6 3 \mathrm{~s}^2 3 \mathrm{p}^2\)
Answer & Solution
Correct Answer
(C) \(1 s^2 2 s^2 2 p^6 3 s^2 3 p^3\)
Step-by-step Solution
Detailed explanation
Hints: General valence shell electronic configuration of 15 group elements is \(n s^2 n p^3\). where \(n=\) period number.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- In case of heteronuclear diatomics of the type \(A B,\) where \(A\) is more electronegative than \(B\), bonding molecular orbital resembles the character of \(A\) more than that of \(B\). The statementWBJEE 2014 Medium
- In aqueous alkaline solution, two electrons reduction of \(\mathrm{HO}_{2}^{-}\) givesWBJEE 2015 Easy
-
The above conversion can be carried out by,WBJEE 2022 Hard - The potential of a hydrogen electrode at \(\mathrm{pH}=10\) isWBJEE 2010 Medium
- The average speed of \(\mathrm{H}_2\) at \(T_1 \mathrm{~K}\) is equal to that of \(\mathrm{O}_2\) at \(T_2 \mathrm{~K}\). The ratio \(T_1: T_2\) isWBJEE 2022 Easy
- Among the following, the extensive variables
areWBJEE 2018 Easy
More PYQs from WBJEE
- If \(z_1, z_2\) are complex numbers such that \(\frac{2 z_1}{3 z_2}\) is a purely imaginary number, then the value of \(\left|\frac{z_1-z_2}{z_1+z_2}\right|\) isWBJEE 2025 Medium
- Particle \(A\) moves along \(X\) -axis with a uniform velocity of magnitude \(10 \mathrm{m} / \mathrm{s}\). Particle \(B\) moves with uniform velocity \(20 \mathrm{m} / \mathrm{s}\) along a direction making an angle of \(60^{\circ}\) with the positive direction of \(X\) -axis as shown in the figure. The relative velocity of \(B\) with respect to that of \(A\) is
WBJEE 2015 Medium - Let \(p, q\) and \(r\) be the sides opposite to the angles \(P, Q\) and \(R,\) respectively in a \(\Delta P Q R .\) If \(r^{2} \sin P \sin Q=p q,\) then the triangle isWBJEE 2012 Easy
- Consider the real valued function \(\mathrm{h}:\{0,1,2 \ldots \ldots 100\} \rightarrow \mathrm{R}\) such that \(\mathrm{h}(0)=5, \mathrm{~h}(100)=20\) and satisfying \(h(p)=\frac{1}{2}\{h(p+1)+h(p-1)\}\) for every \(p=1,2 \ldots .99 .\) Then the value of \(h(1)\) isWBJEE 2021 Medium
- Which of the following statement(s) is (are) correct when a mixture of \(\mathrm{NaCl}\) and \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) is gently warmed with conc. \(\mathrm{H}_{2} \mathrm{SO}_{4} ?\)WBJEE 2016 Medium
- The straight line \(3 x+y=9\) divides the line segment joining the points \((1,3)\) and \((2,7)\) in the ratioWBJEE 2010 Medium