Why the melting point of higher oxides of metal is less as compare to lower circle. Calculate the number of unpaired electron in `V^(3+)` ion.

What is number of unpaired electrons in V^(3+) ion ?

Show the number of unpaired electron in Co^(+3) ion. Is it paramagnetic?

A transition metal compound has a magnetic moment of 3.9 BM. Calculate the number of unpaired electrons in the compound.

Why is the value of magnetic moment of actinoids less than that of lanthanoids having the same number of unpaired electrons ?

What do you mean by 'Dual nature of electron? Derive De-Broglie's equation. The number of unpaired electrons in Cr^3+ ion is _____

(i) The electronic configuration of an atom is [Z](n-2) f^(14)(n-1)d^(1)ns^(2) . What is the minimum position of the atom in the periodic table and correspondingly what is the atomic number of Z? (ii) Find the number of unpaired electrons in the atom of the element having atomic number 16. (iii) Which of the following ions does not obey Bohr's atomic theory? He^(2+),Li^(2+),B^(3+),Be^(3+) .

Why is the melting point of phosphorous higher than that of nitrogen while the melting point of Bi is lower than that of Sb?

Why the oxides of Group 2 metals have high melting points?

If a current passes through a metal conducting wire of area of cross section A, the drift velocity of free electrons inside the metal is v_d=1/( n e A) , where the amount of electric charge of an electron =e and the number of free electrons per unit volume of the metal=n. The applied electric field on the wire is E=V/l , where a potential difference V exists between two points, l apart, along the length of the wire. IF R is the resistance of the wire between those two points, then the resistivity of its material is rho=(RA)/l .Besides the mobility (mu) of the free electrons inside a wire is defined as their drift velocity for a unit applied electric field. The radii of two wires ,made of two different metals are in the ratio 1:2 , The number density of free electrons in the first metal is double that in the second metal. IF the current in the first wire is 1A, then the current in the second wire producing the same drift velocity is

If a current passes through a metal conducting wire of area of cross section A, the drift velocity of free electrons inside the metal is v_d=1/( n e A) , where the amount of electric charge of an electron =e and the number of free electrons per unit volume of the metal=n. The applied electric field on the wire is E=V/l , where a potential difference V exists between two points, l apart, along the length of the wire. IF R is the resistance of the wire between those two points, then the resistivity of its material is rho=(RA)/l .Besides the mobility (mu) of the free electrons inside a wire is defined as their drift velocity for a unit applied electric field. The radii of two wires of the same metal are in the ratio 1:2 The same potential difference is applied between two points at a distance l on each of the wires.The ratio between the drift velocities of the free electrons in two wires is