Question

12. Give one example for each of the following
(i) icosogens (ii) tetragen (iii) prictogen
(iv) chalcogen​

Answer 1

Answer:

boron

carbon

nitrogen

oxygen

Answer 2

Example for

1. Icosogens: Aluminium
2. Tetragens: Silicon
3. Pnictogen: Selenium
4. Chalcogen: Chlorine

• Icosogens are the elements of the 'Boron' family.
• It consists of two different words that are 'Icosahedron' ( 20 faces ) and 'gen' ( produce ).
• Tetragens are the elements of the 'Carbon' family.
• Pnictogens are the elements of group 15 in the periodic table.
• Chalcogens are the elements of group 16 in the periodic table.