CBSE Class 9 Answered
How do we determine the valancy of a substance?
Asked by Vasudha Balaji | 14 Oct, 2013, 11:10: AM
The valency of an element is the ability of that element to combine with other elements. The valency is determined by the number of electrons in the outer shell of each atom of an element.
The following steps are used to calculate the valency of an element:
- Atomic number of the element is noted.
- Electronic configuration of the element is noted.
- The number of electrons in the outer most shell is noted.
- If the number of electrons in the outer most shell is less than four, then the valency of the substance is the number itself.
- If the number of electrons is more than 4 but less than 8, then subtract the number by 4 to get the valency.
Example: Determine the valency of sulphur
- i. Atomic number of sulphur=16
- ii. Electronic configuration= 2,8,6
- iii. the number of electrons is more than 4 but less than 8, therefore
Valency = 8 6= 2
Hence, Valency of sulphur=2
Answered by Karishma Kapoor | 14 Oct, 2013, 12:01: PM
Application Videos
Concept Videos
CBSE 9 - Chemistry
Asked by jssjj | 19 Jan, 2023, 07:25: PM
CBSE 9 - Chemistry
Asked by mohammedhaqqani.6b | 14 Jun, 2022, 02:51: PM
CBSE 9 - Chemistry
Asked by gauravsingh36428 | 14 Mar, 2022, 07:44: PM
CBSE 9 - Chemistry
Asked by jiyajthakor | 28 Feb, 2022, 07:03: PM
CBSE 9 - Chemistry
Asked by gillsaabjashanpreetsingh3 | 16 Jan, 2022, 01:23: PM
CBSE 9 - Chemistry
Asked by prachisharma772007 | 16 Jan, 2022, 11:12: AM
CBSE 9 - Chemistry
Asked by rupasajwan363 | 04 Jan, 2022, 04:17: PM
CBSE 9 - Chemistry
Asked by krishnaahlawat062 | 27 May, 2021, 09:01: PM
CBSE 9 - Chemistry
Asked by rishabhanuskakumawat09 | 05 May, 2021, 06:36: PM
CBSE 9 - Chemistry
Asked by shubhangisinghal2006 | 27 Mar, 2021, 02:49: PM