Chemistry
What is variable valency? Name two elements having variable valency and state their valencies.
Atomic Structure
24 Likes
Answer
Some elements exhibit more than one valency and they are said to have variable valency.
Examples: Iron and copper.
| Metal | Radicals | Valency |
|---|---|---|
| Iron (Fe) | Ferrous, Ferric | 2, 3 |
| Copper (Cu) | Cuprous, Cupric | 1, 2 |
Answered By
13 Likes
Related Questions
What is valency ? Name two elements having variable valency and state their valencies.
State the mass number, the atomic number, number of neutrons and electronic configuration of the following atoms.
(a) 12C6
(b) 16O8
(c) 19F9
(d) 20Ne10
(e) 27Al13
(f) 35Cl17
Also, draw atomic diagrams for each of them.
Draw the diagrams representing the atomic structures of the following:
(a) Nitrogen
(b) Neon
Complete the table below by identifying A, B, C, D, E and F.
Element Symbol Number of protons Number of neutrons Number of electrons Fluorine 9F19 9 A B Aluminium C D 14 13 Potassium 19K39 E F 19