Solution

According to Aufbau's principle,
orbitals with lower n+l have lower energy so as valuse of n+l increases, its energy increases.
Also, if (n+l) is same, lower is n, lower is energy of orbit.
here,
(i)n=4,l=1        n+l=5 
(ii)n=4,l=0        n+l=4
(iiii)n=3,l=2       n+l=5
(iv)n=3,l=1        n+l=4
so order is
(iv)<(ii)<(iii)<(i)

SOLUTION

Borazine, B₃N₃H₆ is also known as inorganic benzene due to its resemblance in structure and properties with benzene. 

SOLUTION

SOLUTION
 

Solution

At 1 STP, 1 mole of a gas is equal to 22.4 L.
Hence, 33.6 L of water vapour corresponds to33.6 / 22.4 ?=1.5 moles.
The molar mass of water is 18 g/mol.
The mass of water is 1.5mol × 18 g/mol = 27g.
The density of water is 1 g/mL.
The volume of water vapour =27g / 1g/mL?=27mL

SOLUTION

Oxygen in H₂O is attached to two H₂O molecules by H-bonding, thus coordination of oxygen in H₂O is four

SOLUTION

Solution

Conductivity through a solution is generallly through the ions that are present in it. Pure water is not very conductive at all, but salt water is quite conductive . Therefore the more salt or ions dissolved in solution, higher is the conductivity (within limits).

As you dilute the solution , the concentration of ions goes down, and the ability to pass a current is diminished. Hence the specific conductance decreases upon dilution

SOLUTION

d-tartaric acid, l-tartaric acid,meso-tartaric acid