Choose the correct option
Molecule | Shape | ||
---|---|---|---|
A | \(BrF_5\) | i | T-shape |
B | \(H_2O\) | ii | See-saw |
C | \(ClF_3\) | iii | Bent |
D | \(SF_4\) | iv | Square Pyramidal |
Analyze Each Molecule Based on VSEPR Theory:
BrF5: The molecule has five bonded pairs and one lone pair around bromine, leading to a square pyramidal shape.
H2O: Water has two bonded pairs and two lone pairs, giving it a bent shape.
ClF3: Chlorine trifluoride has three bonded pairs and two lone pairs, resulting in a T-shape.
SF4: Sulfur tetrafluoride has four bonded pairs and one lone pair, leading to a see-saw shape.
Match Each Molecule with the Correct Shape:
(A) BrF5 - Square pyramidal
(B) H2O - Bent
(C) ClF3 - T-shape
(D) SF4 - See-saw
Conclusion: Based on the shapes identified above, the correct answer is Option (1).
The relation between nm (nm = the number of permissible values of magnetic quantum number (m)) for a given value of azimuthal quantum number (l), is
The term independent of $ x $ in the expansion of $$ \left( \frac{x + 1}{x^{3/2} + 1 - \sqrt{x}} \cdot \frac{x + 1}{x - \sqrt{x}} \right)^{10} $$ for $ x>1 $ is:
Statement-1: \( \text{ClF}_3 \) has 3 possible structures.
Statement-2: \( \text{III} \) is the most stable structure due to least lone pair-bond pair (lp-bp) repulsion.
Which of the following options is correct?
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Choke coil is simply a coil having a large inductance but a small resistance. Choke coils are used with fluorescent mercury-tube fittings. If household electric power is directly connected to a mercury tube, the tube will be damaged.
Reason (R): By using the choke coil, the voltage across the tube is reduced by a factor \( \frac{R}{\sqrt{R^2 + \omega^2 L^2}} \), where \( \omega \) is the frequency of the supply across resistor \( R \) and inductor \( L \). If the choke coil were not used, the voltage across the resistor would be the same as the applied voltage.
In light of the above statements, choose the most appropriate answer from the options given below: