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 : 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 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 : From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. ( ... . (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.
Last Answer : Ans. (a). The element chlorine (Cl) has the highest negative electron gain enthalpy. (b). The element cesium (Cs) has lowest ionization enthalpy. (c). The element fluorine F has lowest atomic radius. (d ... zero group (or group 18). (g). The element carbon (C) forms the largest number of compounds.
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.
Last Answer : (2) Spin quantum number Explanation: Spin quantum number is the fourth quantum number that differentiates two electrons in the same orbital.
Description : How many maximum 3s electrons can have magnetic spin quantum number -1/2?
Last Answer : Ans. 1 electrons.
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 : What are the valence electrons? For s-block and p-block elements show that number of valence electrons is equal to its group number.
Last Answer : What are the valence electrons? For s-block and p-block elements show that number of valence electrons is equal to its group number.
Description : In molecule of calcium sulfide calcium has two valence electron bonds and a sulfur atom has six valence electrons. How many lone pairs of electrons are present in the Lewis structure of calcium?
Last Answer : What is the answer ?
Description : How does energy of core electrons compare with the energy of valence electron?
Last Answer : The energy is higher.
Description : Which electron has seven valence electrons?
Last Answer : Any element in the halogen group will have seven valence electrons. These elements include fluorine, chlorine, bromine, iodine, and astatine.
Description : (2) experience collision less frequently Explanation: When an electric field is applied, both the valence electrons and the free electrons move in the same direction. The hole direction is opposite to that ... to free electrons. This means mobility is also less for a hole compared to free electron.
Last Answer : Carbon dioxide is called a greenhouse gas because - (1) its concentration remains always higher than other gases (2) it is used in photosynthesis (3) it absorbs infrared radiation (4) it emits visible radiation
Description : Electrons which are free to move around are also called A. conduction electrons B. valence shell electrons C. inner electrons D. electron sea
Last Answer : conduction electrons
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 : s-1: `[MnCl_(6)]^(3),[FeF_(6)]^(3-)` and `[CoF_(6)]^(-3)` are paramagnetic having four, five and four unpaired electrons respectively. S-2: Valence bo
Last Answer : s-1: `[MnCl_(6)]^(3),[FeF_(6)]^(3-)` and `[CoF_(6)]^(-3)` are paramagnetic having four, five and ... onn the metal ion. A. TTT B. TFT C. FTF D. TFF
Description : Which of the following set of quantum numbers is impossible for an electron ?
Last Answer : Which of the following set of quantum numbers is impossible for an electron ? A. `n = 1, l = 0,m_(l) = 0,m_(s) = ... = 2,m_(l) = -3,m_(s) = +(1)/(2)`
Description : What electron could have quantum numbers n 4 l 2 ml -2 ms - 12?
Last Answer : Need answer
Description : What electron could have quantum numbers n 4 l 2 ml -2 ms -12?
Description : What electron could have quantum numbers n 4 l 2 ml -2 ms?
Last Answer : A 4d electron; that is for apex :)
Description : “Each electron in an atom must have its own unique set of quantum numbers” is a statement of--------? A. Aufbau principle B. Pauli exclusion principle (Answer) C. Hund’s rule D. Periodic law
Last Answer : B. Pauli exclusion principle (Answer)
Description : “All the four quantum numbers of two electrons in an atom are not the same.” It is the law of — (1) Hund’s (2) Exclusion Principle of Pauli (3) Uncertainty Principle of Hiesenberg (4) Avogadro’s Law
Last Answer : Exclusion Principle of Pauli
Description : What is the valence electron configuration for group 6a?
Last Answer : The elements in group 6a (16) have six valence electrons. The valence electron configuration is Xs2Xp4 , where X is the main energy level (period number).
Description : What element has an atomic number lower than that of aluminum and one less valence electron than group 16 elements?
Last Answer : Nitrogen
Description : Which of the following was the first theory of super conductivity? (1) Ginzburg Landau theory (2) London theory (3) Resonating valence bond theory (4) Quantum field theory
Last Answer : (2) London theory Explanation: The first phenomenological theory of superconductivity was London theory. It was put forward by the brothers Fritz and Heinz London in 1935, shortly ... wherein a material exponentially expels all internal magnetic fields as it crosses the superconducting threshold.
Last Answer : London theory
Description : Elements, like calcium, located toward the top of a group have a high attraction for their valence electrons because they have a _?
Last Answer : small atomic radius.
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 : 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 : 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 : 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 : Germanium possesses (A) one valence electrons. (B) two valence electrons. (C) three valence electrons. (D) four valence electrons.
Last Answer : (D) four valence electrons.
Last Answer : An element used in semiconductors whose atoms have three valence electrons is An acceptor.
Last Answer : An acceptor is an element used in semiconductors whose atoms have three valence electrons.
Description : What's a valence electron?
Last Answer : www.wikipedia.com/Valence_electron
Description : What is the valence electron of fluorine ?
Last Answer : The valence of fluorine is seven.
Description : What is the valence electron of phosphorus ?
Last Answer : Phosphorus valence electron 5 .
Description : What is the valence electron of nitrogen ?
Last Answer : Nitrogen valence is 5 electrons .
Description : How many of the following properties of halogen Increases with increase In atomic number. (a) Number of valence electron (b) Metallic nature (c) Boili
Last Answer : How many of the following properties of halogen Increases with increase In atomic number. (a) Number of ... . (j) `Delta_"eg"H` (magnitude wise)
Description : What elements have 2 valence electron?
Last Answer : Zinc and Calcium
Description : When an atom gains or loses a valence electron it becomes a charged particle call a?
Last Answer : Ion.
Description : What element has the same valence electron configuration as phosphorus?
Last Answer : The answer is nitrogen. Nitrogen is one example of an elementthat has the same valence electron configuration asphosphorus.Ê
Description : What is the valence electron of sulphur?
Last Answer : 3
Description : What is difference between valence electron and free electron?
Last Answer : valence electrons are bound to atoms and are used to bind atoms into molecules. free electron are free, either they are in the conduction band "electron gas" of a metal or they are in a vacuum (perhaps in a vacuum tube).
Description : The director Ilya Krzhanovsky has been shooting the film Dau since 2006 on a set near Kharkhov and has inspired much attention on account of his fanatical attempts at re-creating 50s and 60s Moscow, home to ... -crash and the Nobel he had won had to be awarded to him in a bedside ceremony. Who?
Last Answer : Lev Landau.