What Molecular orbital interactions are not possible because the atomic orbitals have overlapping electron densities.?

What Molecular orbital interactions are not possible because the atomic orbitals have overlapping electron densities.?
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What are the values of the orbital angular momentum of an electron in the orbitals `1s,3s,3d` and `2p`:- (a). `0,0sqrt(6h),sqrt(2h)`(b). `1,1sqrt(4h),

Description : What are the values of the orbital angular momentum of an electron in the orbitals `1s,3s,3d` and `2p`:- (a). `0,0sqrt(6h),sqrt(2h)`(b). `1,1sqrt(4h),

Last Answer : What are the values of the orbital angular momentum of an electron in the orbitals `1s,3s,3d` and `2p`:- (a). `0 ... (3)ħ` D. `0,0,sqrt(20)ħ,sqrt(6)ħ`

When considering electron orbitals, which orbital is generally considered spherical?

Description : When considering electron orbitals, which orbital is generally considered spherical?

Last Answer : ANSWER: S ORBITAL

Distinguish between atomic orbital and molecular orbital.

Description : Distinguish between atomic orbital and molecular orbital.

Last Answer : Ans An atomic orbital is monocentric while a molecular orbital is polycentric.

Give Reason (i)N2 is inert at room temperature. (ii) Overlapping of S orbital with any other orbital forms sigma bonds.

Description : Give Reason (i)N2 is inert at room temperature. (ii) Overlapping of S orbital with any other orbital forms sigma bonds.

Last Answer : Ans .Due to high bond order (3) , it has high bond dissociation energy ,which is not possible at room temperature (ii)Because s orbital has same electron distribution in all axis/ directions

Two hybrid orbitals have a bond angle of `120^(@)`. The percentage of p character in the hybrid orbital is nearly :-

Description : Two hybrid orbitals have a bond angle of `120^(@)`. The percentage of p character in the hybrid orbital is nearly :-

Last Answer : Two hybrid orbitals have a bond angle of `120^(@)`. The percentage of p character in the hybrid orbital is nearly ... 25%` B. `33%` C. `50%` D. `66%`

Heavy metals got their name because compared to other atoms they have - (1) Higher densities (2) Higher atomic masses (3) Higher atomic numbers (4) Higher atomic radii

Description : Heavy metals got their name because compared to other atoms they have - (1) Higher densities (2) Higher atomic masses (3) Higher atomic numbers (4) Higher atomic radii

Last Answer : (2) Higher atomic masses Explanation: Arsenic, beryllium, cadmium, chromium, lead, manganese, mercury, nickel, and selenium are some of the metals called 'heavy' because of their high relative atomic ... and can cause damage or death in animals, humans, and plants even at very low concentrations.

Heavy metals got their name because compared to other atoms they have (1) Higher densities (2) Higher atomic masses (3) Higher atomic numbers (4) Higher atomic radii

Description : Heavy metals got their name because compared to other atoms they have (1) Higher densities (2) Higher atomic masses (3) Higher atomic numbers (4) Higher atomic radii

Last Answer : Higher atomic masses

Pyrrole is less basic than pyridine because the lone-pair of electrons on Natom in pyrrole (a) is part of the delocalized π molecular orbital. (b) is not part of the delocalized π molecular orbital. (c) resides in sp2 hybrid orbital (d) resides in sp hybrid orbital

Description : Pyrrole is less basic than pyridine because the lone-pair of electrons on Natom in pyrrole (a) is part of the delocalized π molecular orbital. (b) is not part of the delocalized π molecular orbital. (c) resides in sp2 hybrid orbital (d) resides in sp hybrid orbital

Last Answer : is part of the delocalized π molecular orbital.

The vapour densities of two gases are in the ratio of `1 : 3 ` . Their molecular masses are in the ratio of : -

Description : The vapour densities of two gases are in the ratio of `1 : 3 ` . Their molecular masses are in the ratio of : -

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The same volume of all gases would represent their  (a) densities  (b) specific weights  (c) molecular weights  (d) gas characteristic constants  (e) specific gravities.

Description : The same volume of all gases would represent their  (a) densities  (b) specific weights  (c) molecular weights  (d) gas characteristic constants  (e) specific gravities.

Last Answer : Answer : c

Calculate the electric field when the conductivity is 20 units, electron density is 2.4 units and the velocity is 10m/s. Assume the conduction and convection current densities are same. a) 2.4 b) 4.8 c) 3.6 d) 1.2

Description : Calculate the electric field when the conductivity is 20 units, electron density is 2.4 units and the velocity is 10m/s. Assume the conduction and convection current densities are same. a) 2.4 b) 4.8 c) 3.6 d) 1.2

Last Answer : d) 1.2

The number of `pi` molecular orbitals completely filled in the ground state of benzene is :

Description : The number of `pi` molecular orbitals completely filled in the ground state of benzene is :

Last Answer : The number of `pi` molecular orbitals completely filled in the ground state of benzene is : A. three B. one C. six D. none

Which of the following contain maximum number of electrons in the antibonding molecular orbitals

Description : Which of the following contain maximum number of electrons in the antibonding molecular orbitals

Last Answer : Which of the following contain maximum number of electrons in the antibonding molecular orbitals A. `O_(2)^(2-)` B. `O_ ... O_(2)^(-1)` D. `O_(2)^(+)`

The order of energy level of molecular orbitals in H3 species in a. 1σ < 2σ = 3σ b. 1σ >2σ = 3σ c. 1σ =2σ < 3σ d. 1σ < 2σ < 3σ

Description : The order of energy level of molecular orbitals in H3 species in a. 1σ < 2σ = 3σ b. 1σ >2σ = 3σ c. 1σ =2σ < 3σ d. 1σ < 2σ < 3σ

Last Answer : d. 1σ < 2σ < 3σ

What type of interactions hold the molecule together in a polar molecular solid?

Description : What type of interactions hold the molecule together in a polar molecular solid?

Last Answer : Within the molecule it is the covalent bonds which hold theatoms together. The facts that the molecule is polar or that thesubstance is in the solid state are irrelevant. If you were tryingto ask ... the molecules together to make the solid, then itis dipole-dipole forces and van der Waals forces.

The increasing vapor pressure caused by heating a liquid is due to------? A. increase inter-molecular interactions B. increasing potential energy of molecules C. increasing kinetic energy of molecules (Answer) D. decreasing surface tension

Description : The increasing vapor pressure caused by heating a liquid is due to------? A. increase inter-molecular interactions B. increasing potential energy of molecules C. increasing kinetic energy of molecules (Answer) D. decreasing surface tension

Last Answer : C. increasing kinetic energy of molecules (Answer)

Which of the following best explains why the melting points of saturated fats increase with increasing molecular weight? (a) decreased hydrogen bonding (b) increased hydrogen bonding (c) decreased intermolecular van der Waal’s interactions (d) increased intermolecular van der Waal’s interactions

Description : Which of the following best explains why the melting points of saturated fats increase with increasing molecular weight? (a) decreased hydrogen bonding (b) increased hydrogen bonding (c) decreased intermolecular van der Waal’s interactions (d) increased intermolecular van der Waal’s interactions

Last Answer : increased intermolecular van der Waal’s interactions

Which of the following statements is correct regarding nucleophiles? (a) They have an overall positive charge(b) They have a lone-pair of electrons(c) They have an unpaired electron(d) They have empty orbitals

Description : Which of the following statements is correct regarding nucleophiles? (a) They have an overall positive charge (b) They have a lone-pair of electrons (c) They have an unpaired electron (d) They have empty orbitals

Last Answer : (b) They have a lone-pair of electrons

In the filling of electron orbitals for the elemen sulfur, which has 16 electrons, the number of electrons in the 3p orbitals is: w) 3 x) 4 y) 6 z) 0

Description : In the filling of electron orbitals for the elemen sulfur, which has 16 electrons, the number of electrons in the 3p orbitals is: w) 3 x) 4 y) 6 z) 0

Last Answer : ANSWER: X -- 4

What is a molecular orbital ?

Description : What is a molecular orbital ?

Last Answer : : The overlap of two orbitals creates a field with a normal density of electron clouds in the middle of the nucleus of the two atoms , called the molecular orbital. In this case the net gravitational force of both atoms is highest.

Which of the following statement is not correct from the point of view of molecular orbital ?

Description : Which of the following statement is not correct from the point of view of molecular orbital ?

Last Answer : Which of the following statement is not correct from the point of view of molecular orbital ? A. `Be_(2)` ... is `pi_(2px)=pi_(2py) lt sigma_(2pz)`

Distinguish between bonding molecular orbital and anti-bonding molecular orbital.

Description : Distinguish between bonding molecular orbital and anti-bonding molecular orbital.

Last Answer : Ans.(i)The bonding molecular orbital has lower energy and hence greater stability than the corresponding antibonding molecular orbital. (ii) Just as the electron probability distribution around a ... formed by the subtraction of wave function of atomic orbital is called antibonding molecular orbital

Give salient features of Molecular orbital theory

Description : Give salient features of Molecular orbital theory

Last Answer : Ans (i) The electrons in a molecule are present in the various molecular orbitals as the electrons of atoms are present in the various atomic orbitals. (ii) The atomic orbitals of comparable ... in accordance with the aufbau principle obeying the Pauli's exclusion principle and the Hund's rule.

Pyridine has a delocalized π molecular orbital containing (a) 4 electrons (b) 6 electrons (c) 8 electrons (d) 12 electrons

Description : Pyridine has a delocalized π molecular orbital containing (a) 4 electrons (b) 6 electrons (c) 8 electrons (d) 12 electrons

Last Answer : 6 electrons

Compare the following complexes with respect to their shape, magnetic behaviour and the hybrid orbitals involved : (i) [CoF4]2- (ii) [Cr(H2O)2(C2O4)2]– (iii) [Ni(CO)4] (Atomic number : Co = 27, Cr = 24, Ni = 28) -Chemistry

Description : Compare the following complexes with respect to their shape, magnetic behaviour and the hybrid orbitals involved : (i) [CoF4]2- (ii) [Cr(H2O)2(C2O4)2]– (iii) [Ni(CO)4] (Atomic number : Co = 27, Cr = 24, Ni = 28) -Chemistry

Last Answer : (i) [COF4]2_ : Tetrafluorido cobalt (III) ion Coordination number = 4 Shape = Tetrahedral Hybridisation = sp3 Important Questions for Class 12 Chemistry Chapter 9 Coordination Compounds Class 12 Important Questions 7

How many atomic orbitals are known? What are they?

Description : How many atomic orbitals are known? What are they?

Last Answer : Answer: Four. S, p, d, and f.

Which of the following is not characteristic of a p bond? (a) A p bond results from lateral overlap of atomic orbitals (b) A p bond may be formed by the overlap of p - or d - orbitals (c) p bonds are obtained from hybrid orbitals (d) p bonds is formed when a bond already exists

Description : Which of the following is not characteristic of a p bond? (a) A p bond results from lateral overlap of atomic orbitals (b) A p bond may be formed by the overlap of p - or d - orbitals (c) p bonds are obtained from hybrid orbitals (d) p bonds is formed when a bond already exists

Last Answer : Ans:(c)

Give conditions for the combination of Atomic Orbitals

Description : Give conditions for the combination of Atomic Orbitals

Last Answer : Ans i).The combining atomic orbitals must have the same or nearly the same energy ii).The combining atomic orbitals must have the same symmetry about the molecular axis iii) The combining atomic orbitals must overlap to the maximum extent

The number of electrons of a neutral atom is automatically known if one knows the? A. Atomic number (Answer) B. Atomic weight C. Number of orbitals D. none

Description : The number of electrons of a neutral atom is automatically known if one knows the? A. Atomic number (Answer) B. Atomic weight C. Number of orbitals D. none

Last Answer : A. Atomic number (Answer)

What two atomic orbitals or hybrid atomic orbitals overlap to form the carbon-carbon σ bond in ethyne? (a) sp3–sp3 (b) sp2–sp2 (c) s–s (d) sp–sp

Description : What two atomic orbitals or hybrid atomic orbitals overlap to form the carbon-carbon σ bond in ethyne? (a) sp3–sp3 (b) sp2–sp2 (c) s–s (d) sp–sp

Last Answer : sp–sp

The orbital angular momentum of 3p electron is :-

Description : The orbital angular momentum of 3p electron is :-

Last Answer : The orbital angular momentum of 3p electron is :- A. `sqrt3 h` B. `sqrt6 h` C. zero D. `sqrt2(h)/(2pi)`

The maximum electron capacity of any orbital is (a) 2 (b) 6 (c) 14 (d) Cannot be determined unless the principal quantum number is known

Description : The maximum electron capacity of any orbital is (a) 2 (b) 6 (c) 14 (d) Cannot be determined unless the principal quantum number is known

Last Answer : Ans:(a)

Is the energy of an electron in 2s orbital same as of that in 2p orbital? Why?

Description : Is the energy of an electron in 2s orbital same as of that in 2p orbital? Why?

Last Answer : Ans. No, the energy depends upon (n+l) values in an atom. Hence 2p orbital has greater energy than 2s.

Which one of the following statements is WRONG? (A) A singlet or triplet state may result when one of the electrons from the HOMO is excited to higher energy levels (B) In an excited singlet state, the spin of the electron in the higher energy orbital is paired with the electron in the ground state orbital (C) Triplet excited state is more stable than the singlet excited state (D) When the electron from the singlet excited state returns to ground state, the molecule always shows fluorescence phenomenon

Description : Which one of the following statements is WRONG? (A) A singlet or triplet state may result when one of the electrons from the HOMO is excited to higher energy levels (B) In an ... the electron from the singlet excited state returns to ground state, the molecule always shows fluorescence phenomenon

Last Answer : (C) Triplet excited state is more stable than the singlet excited state

Which of the two types of electron motion (orbital movement and electron spin) is more important in the explanation of magnetism?

Description : Which of the two types of electron motion (orbital movement and electron spin) is more important in the explanation of magnetism?

Last Answer : Electron spin.

The energy required to completely remove an electron from the first Bohr orbit is called a) excited energy b) ionization energy c) accelerated energy d) orbital energy

Description : The energy required to completely remove an electron from the first Bohr orbit is called a) excited energy b) ionization energy c) accelerated energy d) orbital energy

Last Answer : b) ionization energy

The orbital angular momemtum quantum number indicates which one of the following? w) the average distance of the electrons from the nucleus x) the direction of spin of the electron y) the shape of the orbital z) the position about the three axes in space of the orbital

Description : The orbital angular momemtum quantum number indicates which one of the following? w) the average distance of the electrons from the nucleus x) the direction of spin of the electron y) the shape of the orbital z) the position about the three axes in space of the orbital 

Last Answer : ANSWER: Y -- THE SHAPE OF THE ORBITAL

Which quantum number indicates the shape of the orbital in which the electron moves?

Description : Which quantum number indicates the shape of the orbital in which the electron moves?

Last Answer : ANSWER: B -- SPIN QUANTUM NUMBER

Which of the following indicates the shape of the orbital in which the electron moves? w) principal quantum number x) spin quantum number y) angular momentum quantum number z) none of these

Description : Which of the following indicates the shape of the orbital in which the electron moves? w) principal quantum number x) spin quantum number y) angular momentum quantum number z) none of these

Last Answer : ANSWER: Y -- ANGULAR MOMENTUM QUANTUM NUMBER

The azimuthal quantum number determines the: w) spin of an electron x) shape of an orbital y) size of an orbital z) energy of an orbital

Description : The azimuthal quantum number determines the: w) spin of an electron x) shape of an orbital y) size of an orbital z) energy of an orbital

Last Answer : ANSWER: X -- SHAPE OF AN ORBITAL 

Orbital magnetic moment of an electron, in an atom, is of the order of

Description : Orbital magnetic moment of an electron, in an atom, is of the order of (a) 0.1 Bohr magneton (b) 1.0 Bohr magneton (c) 10 Bohr magneton (d) 100 Bohr magneton

Last Answer : Orbital magnetic moment of an electron, in an atom, is of the order of 1.0 Bohr magneton

The orientation of an atomic orbital is governed by – (1) principal quantum number (2) magnetic quantum number (3) spin quantum number (4) azimuthal quantum number

Description : The orientation of an atomic orbital is governed by – (1) principal quantum number (2) magnetic quantum number (3) spin quantum number (4) azimuthal quantum number

Last Answer : (2) magnetic quantum number Explanation: Quantum numbers may be defined as a set of four numbers which give complete information about the electron in an atom, i.e., energy, orbital occupied, size ... tells the number of orientations which the orbitals present within the same sub-shell can take up.

Orientation of atomic orbital is controlled by –

Description : Orientation of atomic orbital is controlled by –

Last Answer : Magnetic Quantum number

Orientation of atomic orbital is controlled by

Description : Orientation of atomic orbital is controlled by

Last Answer : Magnetic Quantum number

What is the maximum number of electrons that can occupy an s atomic orbital?

Description : What is the maximum number of electrons that can occupy an s atomic orbital?

Last Answer : ANSWER: 2

The orientation of an atomic orbital is governed by (1) principal quantum number (2) magnetic quantum number (3) spin quantum number (4) azimuthal quantum number

Description : The orientation of an atomic orbital is governed by (1) principal quantum number (2) magnetic quantum number (3) spin quantum number (4) azimuthal quantum number

Last Answer : magnetic quantum number

Cherapunji receives more rainfall than Shillong because: (a) the former is nearer to the sea (b) the air of different densities and temperature tends to converge towards Cherapunjl from different direction during the rainy season (c) Cherapunji is located on the windward side (d) convective precipitation brings more rain at Cherapunji

Description : Cherapunji receives more rainfall than Shillong because: (a) the former is nearer to the sea (b) the air of different densities and temperature tends to converge towards Cherapunjl from ... Cherapunji is located on the windward side (d) convective precipitation brings more rain at Cherapunji

Last Answer : Ans: (b)

The law of definite proportions is not applicable to nitrogen oxide because [EAMCET 1981] (A) Nitrogen’s atomic weight is not constant (B) Nitrogen’s molecular weight is variable (C) Nitrogen’s equivalent weight is variable (D) Oxygen’s atomic weight is variable

Description : The law of definite proportions is not applicable to nitrogen oxide because [EAMCET 1981] (A) Nitrogen’s atomic weight is not constant (B) Nitrogen’s molecular weight is variable (C) Nitrogen’s equivalent weight is variable (D) Oxygen’s atomic weight is variable

Last Answer : (C) Nitrogen’s equivalent weight is variable

A frameshift mutation changes the reading frame because the genetic code (A) Is degenerate (B) Is overlapping (C) Has no punctuations (D) Is universal

Description : A frameshift mutation changes the reading frame because the genetic code (A) Is degenerate (B) Is overlapping (C) Has no punctuations (D) Is universal

Last Answer : Answer : C

.Because most of the amino acids are represented by more than one codon, the genetic code is(a) overlapping (b) wobbling (c) degenerate (d) generate.

Description : .Because most of the amino acids are represented by more than one codon, the genetic code is(a) overlapping (b) wobbling (c) degenerate (d) generate.

Last Answer : a) overlapping