How many moles of solute are contained in a 250.0 ml solution with a concentration of 2.5 m

 0.625 moles of solute are contained in a 250.0 ml solution with a concentration of 2.5 M

Explanation:

Molarity : It is defined as the number of moles of solute present per liter of the solution.

Formula used :

where,

n= moles of solute  = ?

= volume of solution in ml = 250 ml

Now put all the given values in the formula of molarity, we get

Therefore, the moles of solute will be 0.625.

the electronic configuration of an atom with eight electrons is 1s²2s²2p⁴. the orbital diagrams are shown in the figure.

as per the hunds rule:

1. electrons tend to avoid being in the same orbital as per as practicable.

2. electrons in different orbitals of the same energy will have their spin parallel.

this can be illustrated from the multiplicity of the orbitals of the atom. as there are four electrons in the p orbital and p orbital has 3 sub-shells. the electrons can be fed in different ways as shown in the figure but the correct orbital diagram will be as per the hunds rule.

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