CBSE Class 9 Answered
Please do a favour.Explain covalency and electrovalency in simple language as i am not getting the bookish language.
Asked by Harshita Singh | 10 Mar, 2016, 09:10: PM
Expert Answer
Covalency:
Valence characterized by the sharing of electrons in a chemical compound. It is the number of pairs of electrons an atom can share.
Covalency is related to covalent bond formation.
Covalency of oxygen is 2 as it shares 2 electrons in a covalent bonding.
Electrovalency:
It is valence characterised by the transfer of electrons from atoms of one element to atoms of another during the formation of an ionic bond between the atoms. Also can be said as the number of electric charges lost or gained by an atom in such a transfer.
Electrovalency of oxygen is -2 as it accepts two electrons and forms O2- while forming ionic bond.
Electrovalency of sodium is +1 as it donates one electron and forms Na+ while forming ionic bond.
Answered by Prachi Sawant | 11 Mar, 2016, 01:40: PM
Application Videos
-
Valency
This video explains the about the valency of the elements. -
Distribution of electrons in orbits
This video explains the about the atomic number and distribution of electro... -
Orbits in An Atom
This video explains an Assertion and Reason Question based on distributi...
Concept Videos
-
Bohr's Model and Electronic Configuration
This video explains the Bohr's model of an atom and the electronic configur... -
Valence Electrons and Octet Rule
This video explains valence electrons and the duplet and octet rules. -
Structure of Atom - Exam Decoded - 3
This video contains questions on the Bohr's model of an atom, electronic co...
CBSE 9 - Chemistry
Asked by archanakad | 25 Aug, 2020, 08:59: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by Jaiwanthsiva | 15 Apr, 2020, 01:51: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by Jaiwanthsiva | 12 Apr, 2020, 11:47: AM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by snaik0856 | 29 Dec, 2019, 09:47: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by Regiesmalom99 | 18 Oct, 2019, 01:36: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by Vishalgarg1234 | 25 Nov, 2018, 03:21: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
. Then i have to first react Carbon with Oxygen then react that compond with calcium. So how will i know the valency of compound formed from reaction of carbon with oxygen. We can know the valency of elements from their atomic number and electronic configuration, but how can i know the valency of compound?
Please help,waiting for your reply,
Thank you. Asked by hk.sachdev | 12 Oct, 2018, 10:38: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by sshivali3333 | 19 Sep, 2018, 11:06: AM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by Topperlearning User | 13 May, 2014, 12:49: PM
ANSWERED BY EXPERTCBSE 9 - Chemistry
Asked by Topperlearning User | 13 May, 2014, 12:50: PM
ANSWERED BY EXPERT
