AP EAMCET · Chemistry · p Block Elements (Group 13 & 14)
Which of the following statements are not correct?
i. Atomic radius of \(\mathrm{Ga}\) is less than that of \(\mathrm{Al}\)
ii. The order of ionization enthalpy of group 13 elements is \(\mathrm{B}>\mathrm{Al}>\mathrm{Ga}>\mathrm{In}>\mathrm{Tl}\)
iii. Boron trioxide is amphoteric in nature
- A ii, iii only
- B i, iii only
- C i, ii only
- D i, ii, iii
Answer & Solution
Correct Answer
(A) ii, iii only
Step-by-step Solution
Detailed explanation
The order of atomic radii of group 13 elements varies as:- \(\mathrm{B} \mathrm{Tl}>\mathrm{Ga}>\mathrm{Al}>\) In This is due to poor shielding by d-subshells and \(\mathrm{f}\)-subshells that result in ionization enthalpy being higher for \(\mathrm{Tl}\) and \(\mathrm{Ga}\).…
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
- If each edge of a cubic unit cell of an element having atomic mass 120 and density \(6.25 \mathrm{~g} \mathrm{cc}^{-1}\) measures \(400 \mathrm{pm}\), then the crystal lattice isAP EAMCET 2021 Medium
- Which one of the following elements on doping with germanium, make it a p-type semiconductor?AP EAMCET 2014 Easy
- Identify the correct statements from the following
I. \(\Delta_{\mathrm{r}} \mathrm{G}\) is zero for \(\mathrm{A} \rightleftharpoons \mathrm{B}\) reaction
II. The entropy of pure crystalline solids approaches zero as the temperature approaches absolute zero
III. \(\Delta U\) of a reaction can be determined using bomb calorimeterAP EAMCET 2024 Medium - In aqueous glucose solution, the mole fraction of water is 40 times to mole fraction of glucose. What is the weight percentage (w/w) of glucose in the solution?AP EAMCET 2025 Medium
- The number of possible aromatic benzenoid isomers for \(\mathrm{C}_6 \mathrm{H}_4 \mathrm{Cl}_2\) areAP EAMCET 2022 Medium
- 1-chloro butane on treatment with alcoholic potash formsAP EAMCET 2020 Easy
More PYQs from AP EAMCET
- If enthalpy of combustion of carbon to \(\mathrm{CO}_2(\mathrm{~g})\) is \(-394.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\), the enthalpy change for the formation of \(17.6 \mathrm{~g}\) of \(\mathrm{CO}_2\) from carbon and dioxygen at the same temperature in \(\mathrm{kJ}\) isAP EAMCET 2018 Medium
- The angle through which the coordinate axes are to be rotated to remove the \(x y\) term in the equation \(x^2+2 x y-y^2=0\) isAP EAMCET 2017 Medium
- If \(S\) be the sample space of a random experiment \(\xi\) and \(P\) be a probability function defined on the power set \(P(S)\) of \(\mathrm{S}\), then which one of the following is not satisfied by P?
(i) \(\mathrm{P}(\phi)=0\)
(ii) If \(\mathrm{E}^{\mathrm{c}}\) is the complementary event of \(\mathrm{E}\), then \(\mathrm{P}\left(\mathrm{E}^{\mathrm{c}}\right)=\) \(1-P(E)\)
(iii) \(0 \leq \mathrm{P}(\mathrm{E}) \leq 1, \forall \mathrm{E} \subseteq \mathrm{S}\)
(iv) If \(\mathrm{E}_1 \subseteq \mathrm{E}_2 \mathrm{P}\left(\mathrm{E}_2\right) \leq \mathrm{P}\left(\mathrm{E}_1\right)\)AP EAMCET 2023 Easy - If the angle between the pair of lines \(x^2+2 \sqrt{2} x y+k y^2\) \(=0, \mathrm{k}>0\) is \(45^{\circ}\), then the area (in square units) of the triangle formed by the pair of bisectors of the angles between these lines and the line \(x+2 y+1=0\) isAP EAMCET 2023 Medium
- As shown in the figure, two particles, each of mass tied at the ends of a light string of length are kept on a frictionless horizontal surface. When the mid point of the string is pulled vertically upwards with a small but constant force the particles move towards each other on the surface. Magnitude of acceleration of each particle, when the separation between them becomes is
AP EAMCET 2018 Hard - The equation of the plane in normal form which passes through the points and isAP EAMCET 2019 Easy