Chemistry, 04.07.2019 19:00 snowprincess99447

What most likely an example of an angular molecule? a)nh3 b)h2o c)sicl4 d)h2co

Answers: 1

Show answers

Answers

Answer from: dondre54

Answer : The correct option is, (B) H_2O

Explanation :

Formula used :

$\text{Number of electrons}=\frac{1}{2}[V+N-C+A]$

where,

V = number of valence electrons present in central atom

N = number of monovalent atoms bonded to central atom

C = charge of cation

A = charge of anion

First we have to determine the hybridization of the following molecules.

(a) NH_3

$\text{Number of electrons}=\frac{1}{2}\times [5+3]=4$

The number of electrons is 4 that means the hybridization will be sp^3 and the electronic geometry of the molecule will be tetrahedral.

But as there are three atoms around the central nitrogen, the fourth position will be occupied by lone pair of electrons. The repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be trigonal pyramidal.

(b) H_2O

$\text{Number of electrons}=\frac{1}{2}\times [6+2]=4$

The number of electrons is 4 that means the hybridization will be sp^3 and the electronic geometry of the molecule will be tetrahedral.

But as there are two atoms around the central oxygen, the third and fourth position will be occupied by lone pair of electrons. The repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be bent or angular.

$\text{Number of electrons}=\frac{1}{2}\times [4+4]=4$

The number of electrons is 4 that means the hybridization will be sp^3 and the electronic geometry of the molecule will be tetrahedral.

(d) H_2CO

$\text{Number of electrons}=\frac{1}{2}\times [4+2]=3$

The number of electrons is 3 that means the hybridization will be sp^2 and the electronic geometry of the molecule will be trigonal planar.

Hence, the H_2O molecule is most likely an example of an angular molecule.

Answer from: Quest

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !

Answer from: Quest

Icant see the pictures

Another question on Chemistry

Chemistry, 22.06.2019 00:00

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

Answers: 1

Answer

Chemistry, 22.06.2019 12:10

Building glycogen from glucose molecules is an example of

Answers: 3

Answer

Chemistry, 22.06.2019 22:50

At the current rate, a graph of carbon dioxide produced by fossil fuels over time would slope upward slope downward be horizontal be vertical

Answers: 3

Answer

Chemistry, 23.06.2019 03:50

Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products

Answers: 1

Answer

You know the right answer?

What most likely an example of an angular molecule? a)nh3 b)h2o c)sicl4 d)h2co...

Questions