valency of f

Drawbacks of Valence Bond Theory - 1) It is a qualitative approach describing bonding in coordination compounds. 2) The theory fails to explain the optical absorption spectra and magnetic properties of coordination compounds. 3) The theory does not provide an answer to the origin of chara..

Fluorine Molecule (F 2 ) - The electronic configuration of fluorine atom is 1s 2 2s 2 2p 5 and therefore, there are 14 electrons in the valence shell of F 2 molecule. The molecular orbital electronic configuration of the molecule is: F 2 : KK ( s 2s) 2 ( s *2..

10. Predict the shapes of the following molecules using the valence shell electron pair repulsion (VSEPR) theory. AsF 5 , HgBr 2..

The elements belonging to groups 15, 16 and 17 have more than four electrons in their valence (outermost) shell. The elements of these groups form stable compounds in which there are more than eight electrons around the central atom. For example PF 5 , PCl 5 , IF 6 and SF 6 are some t..

>If it enters the 'f ' orbital then the element is a 'f' block element,either lanthanide or actinide. The number of electrons in the valence and penultimate shell determines the group to which the element belongs. 's' block element = number of valence electro..

Halides - The elements of this group form a variety of halides. The important features regarding the halides are: (i) Since fluorine is more electronegative than oxygen, its compounds with oxygen are called fluorides. For e.g., F 2 O is written as OF 2 and is named as oxygen difluoride. H..

-) (i) Fluoride ion, F - (ii) Chloride ion, Cl (iii) Bromide ion, Br - (iv) Iodide ion, I - (v) Nitrite ion, NO2 - (vi) Nitrate ion, NO3 - (viii) Hydroxide ion, OH - (viii) Bicarbonate ion, HCO3 - [Hydrogen carbonate ion] (ix) Bisulphate ion, HSO4 - [Hydrogen sulphate ion] (x) Permanganat..

Fluorine atom has seven electrons in its valence shell and needs one electron to complete its octet. Hydrogen atom also has a tendency to share one electron to acquire configuration of helium. When the two atoms approach each other, the overlapping of 1s-orbital of hydrogen and 2p z , or..

The following types of compounds or species are Lewis acids: All molecules possessing an atom with incomplete octet of electrons or Lewis acids. Examples: BF 3 , AlCl 3 All cations are Lewis acids, Examples: Ag + , Cu 2 + , Fe 2 + , Fe 3 + etc. are Lewis acids. All molecules in w..

The structure of xenon compounds can be explained on the basis of the VSEPR theory as well as the concept of hybridization. In the formation of the fluorides of xenon, depending upon the number of Xe-F covalent bonds to be formed e.g., two in XeF 2 , four in XeF 4 an..