AP EAMCET · Chemistry · Classification of Elements and Periodicity in Properties
Which of the following statement is incorrect?
- A A cation is smaller than an anion if they are isoelectronic.
- B Out of \(\mathrm{P}^{3-}, \mathrm{S}^{2-}\) and \(\mathrm{Cl}^{-}, \mathrm{Cl}^{-}\)ion is larger in size.
- C All transition elements are metals.
- D The ionic radii of lanthanoids in trivalent state decrease with increasing atomic numbers.
Answer & Solution
Correct Answer
(B) Out of \(\mathrm{P}^{3-}, \mathrm{S}^{2-}\) and \(\mathrm{Cl}^{-}, \mathrm{Cl}^{-}\)ion is larger in size.
Step-by-step Solution
Detailed explanation
We know that, for isoelectronic species, greater the negative charge on ion, larger is the size of ion. \(\mathrm{P}^{3-}\) ion is larger in size, than \(\mathrm{S}^{2-}\) and \(\mathrm{Cl}^{-}\)ions. So, statement (b) is incorrect.
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
- What are ' \(\mathrm{X}\) ' and ' \(\mathrm{Y}\) ' respectively in the following reactions?
\[
\mathrm{C}_6 \mathrm{H}_5 \mathrm{CHO}+\mathrm{C}_6 \mathrm{H}_5 \mathrm{COCH}_3 \xrightarrow[293 \mathrm{~K}]{\mathrm{OH}^{-}} \underset{\text { major }}{\mathrm{X}} \xrightarrow{\mathrm{NaBH}_4} \mathrm{Y}
\]AP EAMCET 2023 Medium - The order of reactivity of the following alkyl bromides towards \(\mathrm{S}_{\mathrm{N}}{ }^1\) reactions is
a) \(\left(\mathrm{CH}_3\right)_2 \mathrm{CHBr}\)
b) \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\)
c) \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{Br}\)AP EAMCET 2017 Easy - The IUPAC name of the following compound is
AP EAMCET 2022 Easy - Calorific value of producer gas is low because ofAP EAMCET 2007 Easy
- Identify the statement which is not correct?AP EAMCET 2017 Medium
- The mole fraction of a solute in one molal ethanolic solution would beAP EAMCET 2021 Easy
More PYQs from AP EAMCET
- Let \(f(x)=|x-3|+|x+5|\) and
\(A=\left\{a \in \mathbb{R} / \lim _{x \rightarrow a} \frac{f(x)-f(a)}{x-a}\right.\) exists \(\}\)
Then the number of real numbers which are in \((-\infty,-3)\) \(\cup(5, \infty)\) but not in \(A\) isAP EAMCET 2023 Medium - Two radioactive materials \(\mathrm{Y}_1\) and \(\mathrm{Y}_2\) initially contain same number of nuclei. Their decay constants are \(9 \lambda \mathrm{s}^{-1}\) and \(6 \lambda \mathrm{s}^{-1}\) respectively. The time after which the ratio of number of undecayed nuclei of \(\mathrm{Y}_1\) and \(\mathrm{Y}_2\) becomes \(\frac{1}{e}\) isAP EAMCET 2017 Hard
- Six faces of an unbiased die are numbered with \(2,3,5,7,11\) and 13 . If two such dice are thrown, then the probability that the sum on the uppermost faces of the dice is an odd number isAP EAMCET 2004 Medium
- If a complex number \(z\) is such that \(\frac{z-2 i}{z-2}\) purely imaginary number and the locus of \(z\) is a closed curve, then the area of the region bounded by that closed curve and lying in the first quadrant isAP EAMCET 2024 Medium
- If the chord of contact of \(\mathrm{P}\left(x_1, y_1\right)\) with respect to the circle \(x^2+y^2=a^2\) meets the circle at \(\mathrm{A}\) and \(\mathrm{B}\); and if \(\lfloor \mathrm{AOB}=90^{\circ}\), then \(x_1^2+y_1^2=\)AP EAMCET 2017 Easy
- If \(y=f(x)\) is a thrice differentiable function and a bijection then that \(\frac{d^2 x}{d y^2}\left(\frac{d y}{d x}\right)^3+\frac{d^2 y}{d x^2}=\)AP EAMCET 2024 Easy