Compounds of group 16 elements, Chemistry

Assignment Help:

Q. Compounds of Group 16 Elements?

We will now discuss some compounds like the hydrides, halides and oxides of the Group 16 elements.

 All elements of this group form simple volatile binary hydrides of the type H2X (X = 0. S etc.). The simple hydride of oxygen is H2O or water. The other known hydride of oxygen is H202 hydrogen peroxide. Sulphur forms the most extensive series of catenated hydrides such as H2S, H2S2, H2S2 H2 S2 etc. Hydrides of sulphur, other than H2S, are all yellow oils which readily decompose into H2S and free sulphur. Selenium, tellurium and polonium form H2, Se, H2Te and H2Po, respectively.

2152_Compounds of Group 16 Elements.png

The reducing power of hydrides increases whereas their thermal stability decreases in the order H2O; H2S; H2, Se; H2, Te; H2Po. In fact H2Se and H2Te are better reducing agents than hydrogen.

The hydride molecules are angular in shape. The bond angles in H2O, H2S, H2Se and H2Te  being 104.50. 920.910 and 89.0°, respectively. In case of H2O, oxygen is supposed to be sp7 hybridised with two lone pairs occupying two positions on the tetrahedron, Fig. The distortion from the tetrahedral angle (109028') is supposed to be due to stronger repulsion between, lone pairs of electrons compressing the bond angle. In the case of other hydrides, bond angles are close to 900 suggesting that almost pure p -orbitals are inv6lved in bonding to hydrogen.


Related Discussions:- Compounds of group 16 elements

Density theory, The assignment is basically concerned with the writing of a...

The assignment is basically concerned with the writing of a number of functions which can implement the density theory described above. These functions will then be called by a pro

Acid radical., tests for mixture of acid radicals

tests for mixture of acid radicals

#space lattice, #space lattice, unit cell, calculation of particles per uni...

#space lattice, unit cell, calculation of particles per unit cell, laws of crystallography, symmetry elements in crystals, derivation of braggs equation#

.glycol, i wanted the glycol properties and its chemical reactions n prepar...

i wanted the glycol properties and its chemical reactions n preparation

Gastric juice, what are the functions of gastric juice

what are the functions of gastric juice

F-Block, why is the f-block grouped in the way it is

why is the f-block grouped in the way it is

The number of orbitals in the fourth principal quantum no., The number of o...

The number of orbitals in the fourth principal quantum number will be: (1) 4               (2) 8        (3) 12               (4) 16 Ans: 16

Atomic structure and chemical bonding, Ask question #MinimName two compound...

Ask question #MinimName two compound that are covalent when taken pure but produce ions when dissolved in water. um00 words accepted#

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd