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MO' s are formed by the overlap of A'O s...

`MO' s` are formed by the overlap of `A'O s` Two `AO's` combine to form two `MO's` called bonding molecular orbital `(BMO)` and antibonding molecular orbital `(ABMO)` Differnet `AO' s` of one atom combine with these `AO 's` of the second atom which have comparable energies and proper orienation Further, If the overlapping is head on, the `MO` is called 'pi' The `MO's` are filled with electrons following the same rules as followed for filling of atomic orbitals However the order of filling is not the same for all molecules or their ions Bond order is one of the most important parameter to compare a number of their characteristics
Which one of the following has maximum number of nodal planes ? .

A

`sigma^(**)1s`

B

`sigma^(**)2p_(z)`

C

`pi2p_(x)`

D

`pi^(**)2p_(y)`

Text Solution

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The correct Answer is:
D
`sigma^(**)1sw,sigma^(**)2p_(z)` and `pi 2p_(x)` have one nodal plane each whereas `pi^(**)2p_(y)` has two nodal plances .
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MO' s are formed by the overlap of A'O s Two AO's combine to form two MO's called bonding molecular orbital (BMO) and antibonding molecular orbital (ABMO) Differnet AO' s of one atom combine with these AO 's of the second atom which have comparable energies and proper orienation Further, If the overlapping is head on, the MO is called 'pi' The MO's are filled with electrons following the same rules as followed for filling of atomic orbitals However the order of filling is not the same for all molecules or their ions Bond order is one of the most important parameter to compare a number of their characteristics Which one of the following statements is correct .

MO' s are formed by the overlap of A'O s Two AO's combine to form two MO's called bonding molecular orbital (BMO) and antibonding molecular orbital (ABMO) Differnet AO' s of one atom combine with these AO 's of the second atom which have comparable energies and proper orienation Further, If the overlapping is head on, the MO is called 'pi' The MO's are filled with electrons following the same rules as followed for filling of atomic orbitals However the order of filling is not the same for all molecules or their ions Bond order is one of the most important parameter to compare a number of their characteristics In which of the following pair both to MO's are gerade or ungerade ? .

MO' s are formed by the overlap of A'O s Two AO's combine to form two MO's called bonding molecular orbital (BMO) and antibonding molecular orbital (ABMO) Differnet AO' s of one atom combine with these AO 's of the second atom which have comparable energies and proper orienation Further, If the overlapping is head on, the MO is called 'pi' The MO's are filled with electrons following the same rules as followed for filling of atomic orbitals However the order of filling is not the same for all molecules or their ions Bond order is one of the most important parameter to compare a number of their characteristics Which of the following has pair is expected to have the same bond order ? .

MO' s are formed by the overlap of A'O s Two AO's combine to form two MO's called bonding molecular orbital (BMO) and antibonding molecular orbital (ABMO) Differnet AO' s of one atom combine with these AO 's of the second atom which have comparable energies and proper orienation Further, If the overlapping is head on, the MO is called 'pi' The MO's are filled with electrons following the same rules as followed for filling of atomic orbitals However the order of filling is not the same for all molecules or their ions Bond order is one of the most important parameter to compare a number of their characteristics H_(2),Li_(2)B_(2) each has bond order equal to 1 The order of their stability is .

Comprehension given below is followed by some multiple choice question, Each question has one correct options. Choose the correct option. Molecular orbitals are formed by the overlap of atomic orbitals. Two atomic orbitals combine to form two molecular orbitals called bonding molecular orbital (BMO) and anti-bonding molecular orbital (ABMO). Energy of anti-bonding orbital is raised above the parent atomic orbitals that have combined and hte energy of the bonding orbital is lowered than the parent atomic orbitals. energies of various molecular orbitals for elements hydrogen to nitrogen increase in the order sigma1s lt sigma^(star)1sltsigma^(star)2slt((pi2p_(x))=(pi2p_(y)))ltsigma2p_(z)lt(pi^(star)2p_(x) = pi^(star)2p_(y))ltsigma^(star)2p_(z) and For oxygen and fluorine order of enregy of molecules orbitals is given below. sigma1s lt sigma^(star)1s lt sigma2s lt sigma^(star)2s lt sigmap_(z) lt (pi2p_(x) ~~ pi2p_(y)) lt (pi^(star)2p_(x)~~ pi^(star)2py) lt sigma^(star)2p_(z) Different atomic orbitalsof one atom combine with those atoms orbitals of the second atom which have comparable energies and proper orientation. Further, if the overlapping is head on, the molecular orbital is called sigma, sigma andif the overlap is lateral, the molecular orbital is called pi, pi . The molecular orbitals are filled with electrons according to the same rules as followed for filling of atomic orbitals. However, the order for filling is not the same for all molecules or their ions. Bond order is one of the most important parameters to compare the strength of bonds. 66) Which of the following moleculart orbitals has maximum number of nodal planes?

Molecular orbitals are formed by the overlap of atomic orbitals. Two atomic called bonding molecular orbital (BMO) and anti - bonding molecular orbital (ABMO). Energy of anti - bonding molecular orbital (BMO) and anti - bonding molecular orbital ABMO). Energy of anti - bonding orbitals is raised above the parent atomic orbitals that have combined and the energy of the bonding orbital is lowered than the parent atomic orbitals. Energies of various molecular orbitals for elements hydrogen to nitrogen increase in the order : sigma1slt sigma^(**)1s lt sigma2sltsigma^(**)2slt(pi2p_(x)~~pi2p_(y))ltsigma2p_(z)lt(pi^(**)p2p_(x)~~pi^(**)2p_(y))ltsigma^(**)2p_(z) and for oxygen and fluorine order of energy of molecular orbitals is given as : sigma1s lt sigma^(**)1slt sigma2sltsigma^(**)2sltsigma2p_(z)lt(pi2p_(x)~=2pi2p_(y))lt(pi^(**)2p_(x)~=pi^(**)2p_(y))ltsigma^(**)2p_(z). Different atomic orbitals of one atom combine with those atomic orbitals of the second atom which have comparable energies and proper orientation. Further, if the overlapping is head on, the molecular orbital is called 'sigma', (sigma) and if the overlap is lateral, the molecular orbital is called 'pi', (pi) . The molecular orbitals are filled with electrons according to the same rules as followed for filling of atomic orbitals. However, the order for filling is not the same for all moleculas or their ions. Bond order is one of hte most important parameters to compare the strength of bonds. Which of the following molecular orbitals has maximum number of nodal planes?

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