Question:
The superior type of laboratory apparatus are made of:
The superior type of laboratory apparatus are made of:
Updated On: Jun 7, 2022
- soda-lime glass
- hard glass
- flint glass
- pyrex glass
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The Correct Option is D
Solution and Explanation
Pyrex glass mainly consists boron silicate along with sodium and aluminium silicates. This glass has quality of with standing sudden change in temperature, hence, is highly suitable for laboratory apparatus.
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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