Answer:
nine
There are nine orbitals in the n = 3 shell. There is one orbital in the 3s subshell and three orbitals in the 3p subshell. The n = 3 shell, however, also includes 3d orbitals. The five different orientations of orbitals in the 3d subshell are shown in the figure below.
Explanation:
pretty sure it's both are physical changes.
The total change in bond energy of the reaction is calculated by subtracting the sum of energies of bonds broken from that of bonds formed.
- An exothermic reaction will have a negative value while an endothermic reaction will have a positive for total change in bond energy.
<h3>How to calculate total change in bond energy from bond energies </h3>
To calculate the total change in bond energy of a given reaction, the following formula is used:
- Total change in bond energy = sum of energies of broken bonds - sum of energies of bonds formed
After getting the total change in bond energy of the reaction, the value obtained will be used to predict if the reaction is exothermic or endothermic.
A negative value indicates an exothermic reaction.
A positive value indicates an endothermic reaction.
Therefore, total change in bond energy of the reaction is calculated by subtracting the sum of energies of bonds broken from that of bonds formed.
An exothermic reaction will have a negative value while an endothermic reaction will have a positive for total change in bond energy.
Learn more about bond energy at: brainly.com/question/16997325
According to the Arrhenius concept, the strength of an acid depends upon the H⁺ ions furnished by the acid.
<h3>What is the Arrhenius theory of acids?</h3>
According to the Arrhenius theory, acids are those substance which will give H⁺ ion in an aqueous solution.
And acidity of any substance will be calculated by using the pH value which can be calculated as pH = -log[H⁺].
- Hydrolysis will not able to define the strength of the acid.
- Concentration of the acid is also not valid to define the strength of the acid because all acids will not have H⁺ ion.
- Number of moles of the base which are used for neutralization is also not used to define the strength of Arrhenius acid.
Hence H⁺ ions furnished by the acid is used to define the strength of Arrhenius acid.
To know more about Arrhenius acid, visit the below link:
brainly.com/question/1163742
#SPJ1
C.aluminium
Although the strongest metals are alloys, made up of more than 1 metal (like steel).