Arrange s,p and d sub-shells of a shell in the increasing order of effective nuclear charge `(Z_en)` experienced by the electron present in them.

Among the pairs of orbital which orbital will experience more effective nuclear charge ? 3d and 3p

Arrange the following orbitals of H-atom in the increasing order of their energy. 3p_(x),2s,4d_(xy),3s,4p_(z),3p_(y),4s

The unpaired electrons in Al and Si are present in 3p orbital. Which electron will experience more effective nuclear charge from the nucleus?

The following table gives the length of three copper wires, their diameters and the applied potential difference across their ends. Arrange the wires in increasing order according to the following The drift speed of electrons through them?

The quantum numbers of six electrons are given below . Arrange them in order of increasing energies. If any of these combinations has /have the same energy lists:

packing fraction of a unit cell is drfined as the fraction of the total volume of the unit cell occupied by the atom(s). P.E=("Volume of the atoms(s) present in a unit cell")/("Volume of unit cell")=(Zxx(4)/(3)pir^(3))/(a^(3)) and % of empty space = 100- P.F.xx100 where Z= effective number of atoms in s cube . r= radius of a an atoms a = edge length of the cube % of empty space in body centered cubic cell unit is nearly :

packing fraction of a unit cell is drfined as the fraction of the total volume of the unit cell occupied by the atom(s). P.E=("Volume of the atoms(s) present in a unit cell")/("Volume of unit cell")=(Zxx(4)/(3)pir^(3))/(a^(3)) and % of empty space = 100- P.F.xx100 where Z= effective number of stoms in s cube . r= radius of a an atoms a = edge lenght of the cube Packing fraction in face centered cubic unit cell is :

Give the correct order of initials T(true)F(false) for following satements. (I) If electron has zero quantum magnetic numbers, then it must be present in s-orbital (II) In orbital diagram, Pauli's exclusion principal is violated (III) Bohr's model can explain spectrum of the hydrogen atom. (IV) A d-orbital can accommodate maximum 10 electrons only.

In Bohr's model, for unielectronic atom, following symbols are used r_(n)z rarr radius of n_(th) orbit with atomic number Z, U_(n,z) rarr Potantial energy of electron , K_(n,z)rarr Kinetic energy of electron , V_(n,z)rarr Volocity of electron , T_(n,z) rarr Time period of revolution {:("ColumnI","ColumnII"),((A)U_(1,2):K_(1,1),(P)1:8),((B)r_(2,1):r_(1,2),(Q)-8:1),((C)V_(1,3):V_(3,1),(R)9:1),((D)T_(1,2):T_(2,2),(S)8:1):}

The increasing order (lowest first) for the values of e//m (charge//mass) for electron (e) , proton (p) , neutron (n) , and alpha particle (alpha) is