Description : Two electrons in an orbital are differentiated by which of the following? (1) Magnetic quantum number (2) Spin quantum number (3) Principal quantum number (4) Azimuthal quantum number
Last Answer : (2) Spin quantum number Explanation: Spin quantum number is the is the fourth quantum number that differentiates two electrons in the same orbital. The Pauli exclusion principle states that "no two ... atom. Each electron must have a different spin or occupy a different shell from any other.
Description : Two electrons in an orbital are differentiated by which of the following ? (1) Magnetic quantum number (2) Spin quantum number (3) Principal quantum number (4) Azimuthal quantum number
Last Answer : Spin 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.
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
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
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
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
Description : What does the principal quantum number ‘n’ and azimuthal quantum number ‘l’ of an electron belonging to an atom represent?
Last Answer : What does the principal quantum number ‘n’ and azimuthal quantum number ‘l’ of an electron belonging to an atom represent?
Description : How many maximum 3s electrons can have magnetic spin quantum number -1/2?
Last Answer : Ans. 1 electrons.
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)
Description : When there are two electrons in the same orbital, they have: (1) same spin (2) opposite spin (3) same or opposite spin (4) no spin
Last Answer : opposite spin
Description : An electron is present in 4 f sub - shell . The possible values of azimuthal quantum number for this electron are :-
Last Answer : An electron is present in 4 f sub - shell . The possible values of azimuthal quantum number for this electron are :- A. ... 3 B. 1 ,2, 3, 4 C. 3 D. 4
Description : Explain the significance of Azimuthal quantum number.
Last Answer : Ans. It refers as sub-energy level of an atom.
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
Description : Five valence electrons of `.^(15)P` re labelled as If the spin quantum numbers of B and Z is `+(1)/(2)`, the group of electron with three of the quant
Last Answer : Five valence electrons of `.^(15)P` re labelled as If the spin quantum numbers of B and Z is `+(1)/(2)`, ... A. AB,XYZ,BY B. AB C. XYZ,AZ D. AB,XYZ
Description : What are the two kinds of Rotatory motion? (1) Spin and Vibrational motion (2) Spin and Orbital motion (3) Spin and Translatory motion (4) Spin and Projectile motion
Last Answer : (2) Spin and Orbital motion Explanation: The motion of an object is said to be rotatory if the particles of the object rotate in a circular path with respect to an imaginary axis, known as the axis of rotation.
Last Answer : (2) Spin and Orbital motion Explanation: Rotary motion (angular motion) of a body can take place about an axis that passes through the body or about an axis that does not pass through the body.
Description : If in a motion, the axis of the rotation does not pass through the object, then the motion is called - (1) Spin motion (2) Oscillatory motion (3) Translatory motion (4) Orbital motion
Last Answer : (4) Orbital motion Explanation: The axis of the rotation does not pass through the object in orbital motion. It involves the quantum mechanical motion of rigid particles (such as electrons) about some other mass, or about them selves.
Description : If in a motion, the axis of the rotation passes through an object, then the motion is called. (1) Orbital motion (2) Circulatory motion (3) Spin motion (4) Oscillatory motion
Last Answer : (3) Spin motion Explanation: A rotation is a circular movement of an object around a center (or point) of rotation A threedimensional object al ways rotates around an imaginary line called a rotation axis.
Description : If the value of principal quantum number is 4 , the possible values for magnetic quantum number will be :-
Last Answer : If the value of principal quantum number is 4 , the possible values for magnetic quantum number will be :- A. 4 B. 16 C. 32 D. 9
Description : Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission spectra will be - (1) 2 (2) 6 (3) 5 (4) 3
Last Answer : (2) 6 Explanation: Number of spectral lines from a state n to ground state is = n (n-1)/2 =4(4-1)/2 =12/2 =6
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.
Description : Which quantum number gives the shape of the orbital?
Last Answer : Answer: Azimuthal quantum number.
Description : In quantum chemistry, a nodal surface: w) gives 99 percent contour surface for an orbital x) exists for a 1s orbital y) has quantum number l = 1 z) is an orbital surface on which the probability density is zero
Last Answer : ANSWER: Z -- IS AN ORBITAL SURFACE ON WHICH THE PROBABILITY DENSITY IS ZERO
Description : Which quantum number indicates the shape of the orbital in which the electron moves?
Last Answer : ANSWER: B -- SPIN QUANTUM NUMBER
Description : Explain the significance of spin quantum number.
Last Answer : Ans.The direction of spinning of an electron in an orbit as well as the net magnetic moment of an orbital.
Description : How many quantum numbers are needed to designate an orbital?
Last Answer : Ans.Three quantum numbers.
Description : (2) Exclusion Principle of Pauli Explanation: The Pauli exclusion principle is the quantum mechanical principle that no two identical fermions (particles with half-integer spin) may occupy the same ... function for two identical fermions is anti-symmetric with respect to exchange of the particles.
Last Answer : The three elements most needed in common fertilizers are – (1) Sulphur, Phosphorous and Sodium (2) Nitrogen, Phosphorous and Sodium (3) Phosphorous, Sodium and Nitrogen (4) Calcium, Phosphorous and Potassium
Description : Suppose in certine condition only those transition are allowed to hydrogen atoms in which the principal quantum number a changes by`2` (a) Find the sm
Last Answer : Suppose in certine condition only those transition are allowed to hydrogen atoms in which the principal quantum ... visible range `(380 nm to 780 nm)`
Description : What element with an electron configuration that ends with np2 where n is any principal quantum number?
Last Answer : Feel Free to Answer
Description : What the principal of quantum number?
Last Answer : The principal quantum number (n) is the energy level occupied bythe electron. It is an integer value, 1,2,3,4, etc.
Description : What is the maximum number of electrons that can be accommodated in an orbital?
Last Answer : Answer: 2.
Description : The maximum number of electrons in p-orbital with n = 6, m = 0 is
Last Answer : The maximum number of electrons in p-orbital with n = 6, m = 0 is A. 2 B. 6 C. 10 D. 14
Description : What is the maximum number of electrons that can occupy an s atomic orbital?
Last Answer : ANSWER: 2
Description : What is the maximum number of electrons that can occupy an s orbital?
Last Answer : ANSWER: TWO
Description : The number of unpaired electrons in `d^(6)`, low spin, octahedral complex is :
Last Answer : The number of unpaired electrons in `d^(6)`, low spin, octahedral complex is : A. 4 B. 2 C. 1 D. 0
Description : How many electrons can occupy an s orbital? w) one x) two y) three z) four
Last Answer : ANSWER: X -- TWO
Description : Assertion:- `N_(2)^(+)` is more stable than `N_(2)^(-)` Reason:- `N_(2)^(+)` has less electrons in antibonding orbital .
Last Answer : Assertion:- `N_(2)^(+)` is more stable than `N_(2)^(-)` Reason:- `N_(2)^(+)` has ... the Reason is False. D. If both Assertion & Reason are false
Description : How many totals electrons can the d orbital hold?
Last Answer : 10
Description : How many electrons are in the N1 orbital?
Last Answer : Need answer
Description : A substance emits energy which is detected as a line emission in the visible region using a spectroscope. The origin of this energy is (a) Vibrational energy of the molecules (b) Rotational energy of the molecules (c) Energy of orbital electrons (d) Energy of protons in the nucleus.
Last Answer : Ans:(c)
Description : Electrons in the highest energy level of an atom are called _______. (1) valence protons (2) orbital protons (3) valence electrons (4) orbital electrons
Last Answer : (3) valence electrons Explanation: The outermost orbital shell of an atom is called its valence shell, and the electrons in the valence shell are valence electrons.
Description : Pyridine is less basic than trimethylamine because the lone-pair of electrons on N-atom in pyridine resides in (a) sp2 hybrid orbital (b) sp hybrid orbital (c) sp3 hybrid orbital (d) p-orbital
Last Answer : sp2 hybrid orbita
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.
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
Description : The lone-pair electrons of the methyl anion occupy a __________ orbital. (a) s (b) sp (c) sp2 (d) sp3
Last Answer : sp3
Description : Which of the following is a necessary characteristic for electrons that share an s orbital? w) coplanar spins x) parallel spins y) opposite spins z) none of these
Last Answer : ANSWER: Y -- OPPOSITE SPINS
Description : In argon, find the numer of electrons with spin value `+(1)/(2)`
Last Answer : In argon, find the numer of electrons with spin value `+(1)/(2)`
Description : The electrons which spins about its axis will possess what kind of energy? A. Translational energy B. Spin energy C. Rotational kinetic energy D. Sensible energy
Last Answer : Spin energy
Description : The electrons in an atom which rotate about the nucleus possess what kind of energy? A. Translational energy B. Spin energy C. Rotational kinetic energy D. Sensible energy
Last Answer : Rotational kinetic energy