Subject: Chemistry, asked on 18/10/17

## What is the difference between trigonal pyramid and trigonal bipyramid shape. Plx explain wih examples.

Subject: Chemistry, asked on 15/10/17

## (a)  Tripositive and tetrapositive ions are rare when compared to dipositive an unipositive ions. ​

Subject: Chemistry, asked on 11/10/17

## Use resonance structure to describe the electronic structure of formate ion (HCOO-).

Subject: Chemistry, asked on 11/10/17

## Are d2sp3 and sp3d2 hybridisation the same ?

Subject: Chemistry, asked on 9/10/17

## please upload animated video for VSEPR and  VBT in class 11 chemistry in short time

Subject: Chemistry, asked on 8/10/17

## Why is the concept of resonance needed ? What is a resonance hybrid ? How does it differ from the resonance structures drawn for a molecule ?

Subject: Chemistry, asked on 8/10/17

## The phosphine molecule , PH3 , has a trigonal pyramidal shape with H-P-H bond angles equal to 93.70. Give the orbital diagram for phophorus in the PH3 molecule and indicate the orbitals that share electrons with those from hydrogen.

Subject: Chemistry, asked on 6/10/17

## Prove that the hybridisation of Be is sp in BeCl2 .

Subject: Chemistry, asked on 6/10/17

## no. of electrons in N2, CO, NO+

Subject: Chemistry, asked on 5/10/17

## Q. Which one is correct.

Subject: Chemistry, asked on 4/10/17

## why do phosphorous pcl5 has ten electrons. justify

Subject: Chemistry, asked on 3/10/17

## Draw a shape for kossel lewiside blcl2

Subject: Chemistry, asked on 3/10/17

## Pls ans fast.....urgent Q) 20 Q.20. A student working in the laboratory kept an aqueous solution of ferrous sulphate in a vessel made up of zinc. After a few days, he found that vessel had developed holes and Cracks. a) Why did the vessel develop holes in it? b) Name the type of redox reaction and mention the balanced chemical reaction involved in it. c) What is the value associated with this?

Subject: Chemistry, asked on 3/10/17

## Q.19. Calculate the temperature of 2 moles of sulphur dioxide gas contained in 5 L vessel at 10 bar pressure. Given that for $S{o}_{2}$ gas, van der Waal's constants are : a = 6.7 bar and b = 0.0564 L $mo{l}^{-1}$.

Subject: Chemistry, asked on 2/10/17

## Bond angle of NH3+ and H3O+

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