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sigma2s, pi^(**) (2p(x)) and pi(2p(x)) a...

`sigma2s, pi^(**) (2p_(x))` and `pi(2p_(x))` are gerade `MO` .

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The number of nodal planes in `pi 2px` and `pi^(**)2px` are one and two respectively .
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Select from the following molecular orbitals which are gerade ungerade (a) sigma(2s) (b) pi^(**)(2p_(x)) (c ) pi ^(**)(2p_(y)) (d) sigma^(**)(1s) (e) pi (2p_(x)) (f) pi (2p_(x)) .

The molecular orbital configuration of a diatomic molecule is sigma 1s^(2) sigma^(**)1s^(2)sigma2s^(2)sigma^(**)2s^(2) sigma2p_(z)^(2)pi2p_(x)^(2)pi2p_(y)^(2) Its bond order is _________.

Assertion Both pi(2P_(x)) and pi^(**)(2P_(x))MO's have one nodal plane each Reasoning All MO's formed by side way overlapping of 2p orbitals have one nodal plane .

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. In which of the following molecules, sigma2p_(z) molecular orbital is filled after pi2p_(x) and pi2p_(y) molecular orbitals?

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)1s lt sigma^(star)2s lt ((pi2p_(x))=(pi2p_(y))) lt sigma2p_(z) lt (pi^(star)2p_(x) = pi^(star)2p_(y)) lt sigma^(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. 67) Which of the following pair is expected to have the same bonod order?

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)1s lt sigma^(star)2s lt ((pi2p_(x))=(pi2p_(y))) lt sigma2p_(z) lt (pi^(star)2p_(x) = pi^(star)2p_(y)) lt sigma^(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. 67) Which of the following pair is expected to have the same bond order?

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?

Considering X axis as the inter nuclear axis, which out of the following will form a sigma bond (a) 1s and ls (b) ls and 2p_(x) (c ) 2p_(y) and 2p_(y) (d) 2p_(x) and 2p_(y) (e) 1s and 2s .

The ground state eletronic configuration of N2 molecule is written as: KK(sigma _(2s))^2(sigma_(2s)^(**))^2(pi_(2px))^2=(pi_(2py))^2(sigma_(2pz))^2 The bond order of N_2 is

Among the following molecular orbitals how many have at least one nodal plane? sigma^ast1s , sigma2s , sigma^ast2p_z , pi2p_x , pi^ast2p_y , sigma 2p_z

CENGAGE CHEMISTRY ENGLISH-CHEMICAL BONDING AND MOLECULAR STRUCTURE-Exercises True/False
  1. Acidic strength order CI(2)O(7) gtSO(3) gtP(4) O(10) .

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  2. Acidic strength order HCIO gtHBrO gtHIO .

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  3. Basic strength order NH(3) gtPH(3) gtAsH(3) gtBiH(3) .

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  4. XeO(3) is a trigonal pyramidal molecule .

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  5. The lanthanoid ions other than the f^(0) type and f^(14) types are all...

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  6. LiHCO(3) and Ca(HCO(3))(2) are not found in solid state .

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  7. All molecules with polar bonds have dipole moment.

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  8. Assertion : Ionic bonds are directional in nature whereas covalent bo...

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  9. The dipole moment of CH3F is greater than that of CH3Cl.

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  10. The presence of polar bonds in a polyatomic molecule suggests that the...

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  11. The boiling point of HCI is less than that of HF .

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  12. Both PH(3) and PH(5) exist .

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  13. sigma2s, pi^(**) (2p(x)) and pi(2p(x)) are gerade MO .

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  14. Out of NO,NO^(o+) and CN^(o+) the paramagnetic species is NO^(o+) .

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  15. Arrange the following types of intermolecular forces in order of decre...

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  16. sigma2s, pi^(**) (2p(x)) and pi(2p(x)) are gerade MO .

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  17. Predict the order of decreasing boiling points of the following H(2),H...

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  18. (a)Give the decreasing order of melting points of the following NH(3),...

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  19. Out of CH(3)OH and (CH(3))(3)N both exhibit H-bonding .

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  20. CO(2) and N(3)^(Theta) have sane bond order and same shape .

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