The amorphous form of silica is :
- quartz
- kieselguhr
- cristobalite
- tridymite
The Correct Option is B
Solution and Explanation
Top Questions on Group 13 Elements
- Yellow compound of lead chromate gets dissolved on treatment with hot NaOH solution. The product of lead formed is a:
- JEE Main - 2024
- Chemistry
- Group 13 Elements
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Melting point of Boron (2453 K) is unusually high in group 13 elements.
Reason (R): Solid Boron has a very strong crystalline lattice.
In the light of the above statements, choose the most appropriate answer from the options given below:- JEE Main - 2024
- Chemistry
- Group 13 Elements
- Given below are two statements:
Statement I: Group 13 trivalent halides get easily hydrolyzed by water due to their covalent nature.
Statement II: \( AlCl_3 \) upon hydrolysis in acidified aqueous solution forms octahedral \([Al(H_2O)_6]^{3+}\) ion.
In the light of the above statements, choose the correct answer from the options given below:- JEE Main - 2024
- Chemistry
- Group 13 Elements
- In normal oxides of group 13 elements, the ratio of element to oxygen is
- AP EAPCET - 2023
- Chemistry
- Group 13 Elements
- Relative stability orders of +1, +3 oxidation states of Ga, In, Tl are respectively
- AP EAPCET - 2023
- Chemistry
- Group 13 Elements
Questions Asked in JEE Main exam
- A force of 49 N acts tangentially at the highest point of a sphere (solid of mass 20 kg) kept on a rough horizontal plane. If the sphere rolls without slipping, then the acceleration of the center of the sphere is:
- JEE Main - 2025
- Quantum Mechanics
Let \( A = \{-3, -2, -1, 0, 1, 2, 3\} \). A relation \( R \) is defined such that \( xRy \) if \( y = \max(x, 1) \). The number of elements required to make it reflexive is \( l \), the number of elements required to make it symmetric is \( m \), and the number of elements in the relation \( R \) is \( n \). Then the value of \( l + m + n \) is equal to:
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- Sets and Relations
For hydrogen-like species, which of the following graphs provides the most appropriate representation of \( E \) vs \( Z \) plot for a constant \( n \)?
[E : Energy of the stationary state, Z : atomic number, n = principal quantum number]- JEE Main - 2025
- Hydrogen
- Concentrated nitric acid is labelled as 75%by mass. The volume in mL of the solution which contains 30 g of nitric acid is: Given: Density of nitric acid solution is 1.25 g/mL.
- JEE Main - 2025
- Solutions
The number of 6-letter words, with or without meaning, that can be formed using the letters of the word MATHS such that any letter that appears in the word must appear at least twice, is $ 4 \_\_\_\_\_$.
- JEE Main - 2025
- permutations and combinations
JEE Main Notification
Concepts Used:
Group 13 Elements
Group 13 is commonly known as the Boron Family. The boron family comprises:
- Boron (B)
- Aluminum (Al)
- Gallium (Ga)
- Indium (In)
- Thallium (Tl)
Element 113 (Nihonium) gets the name of ununtrium Uut. Each one of the elements has three electrons in the external shell of their nuclear structure is one of the important and mutual properties of the group.
The general electronic configuration for the group 13 elements is ns2 np1.
Density of Boron Family:
Melting point and Boiling Point:
Electronegativity:
Atomic and Ionic Radii:
Compounds of Group 13 Elements:
- Oxides
- Halides
- Borates
- Boron Hydrides
- Diborane
- Borazine