Which equation defines the ideal gas law? pn = rvt pvt = nr pt = nrv pv = nrt p = nrtv

Option (d) is the correct answer.

Explanation:

An ideal gas is defined as the gas for which product of pressure and volume equals to the product of number of moles, gas constant and temperature.

Mathematically,            PV = nRT

where     P = pressure

              V = volume

               n = number of moles

               R = gas constant

               T = temperature

Thus, we can conclude that out of the given options PV = nRT equation defines the ideal gas law.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."