CBSE Class 12-science Answered
what is ineffective shielding?
what do you mean by oxidation state and how we can obtain oxidation number of any element ? show me with the help of several examples?
Asked by shiv nandan | 29 Aug, 2010, 12:00: AM
Expert Answer
Ineffective or poor shielding of the nuclear charge by the electrons in the d and f orbitals is because of their shapes and poor penetration power. As a result the outer valence electrons are more strongly attracted by the nucleus resulting in increase in ionization potentials.
Oxidation state is the indicator of the degree of oxidation of an atom in a chemical compound
For example:
Vanadium forms a number of different ions - for example, V2+ and V3+.
The 2+ ion will be formed by oxidising the metal by removing two electrons:
The vanadium is now said to be in an oxidation state of +2.
Removal of another electron gives the V3+ ion:
The vanadium now has an oxidation state of +3.
Answered by | 29 Aug, 2010, 11:35: AM
Application Videos
Concept Videos
-
Trends in properties of P-block elements
This video gives a general introduction to group 15, 16 and 17 elements alo... -
p-Block Elements - Nitrogen
Describes preparation, properties and uses of dinitrogen, ammonia and nitri... -
Halogens
This video describes preparation, properties and uses of chlorine, preparat... -
Phosphorus and its Compounds
This video explains allotropic forms of Phosphorus, Preparation and propert... -
Oxygen
This video explains preparation, properties and uses of oxygen and ozone. S...
CBSE 12-science - Chemistry
Asked by shwetayaligar205 | 21 Dec, 2022, 07:45: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by kushwaharitik9129 | 14 Jul, 2022, 01:06: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by gurugubellisaivishal2705 | 09 Jul, 2022, 12:16: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by nonuhasan2 | 20 Nov, 2021, 12:05: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by skumkum976 | 08 May, 2021, 03:49: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by cute44464 | 01 Mar, 2021, 01:17: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by manivannanbalakrishnan52 | 09 Dec, 2020, 10:06: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by onkaronkar618 | 12 Oct, 2020, 11:38: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by contactus.topperlearning | 13 Sep, 2020, 01:21: PM
ANSWERED BY EXPERTCBSE 12-science - Chemistry
Asked by nishaohlyan835 | 30 Jun, 2020, 04:18: PM
ANSWERED BY EXPERT
