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 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 : 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 : 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 : magnetic 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 : Which quantum number indicates the shape of the orbital in which the electron moves?
Last Answer : ANSWER: B -- SPIN 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 : 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 : What element with an electron configuration that ends with np2 where n is any principal quantum number?
Last Answer : Feel Free to Answer
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 : How many quantum numbers are needed to designate an orbital?
Last Answer : Ans.Three quantum numbers.
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 : What is the maximum capacity of d-orbital?
Last Answer : Answer: 10 electrons.
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 : 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 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 : The average age of the students in a class is 14. The average age of half of the students in that class and the class teacher is 16. The average age of the remaining half of the students is 15. What is the number of students in that class? a) 20 b) 70 c) 80 d) Cannot be determined e) None of these
Last Answer : Because total no. of students is not known we cannot find the answer. Answer: d)
Description : For the number A[15:0] = 0110110010001111, A[14:13] is ______ A[3:2]. a. less than b. greater than c. the same as d . cannot be determined
Last Answer : c. the same as
Description : The artificial activity which indicates that an activity following it, cannot be started unless the preceding activity is complete, is known as (A) Event (B) Free float (C) Dummy (D) Constrain
Last Answer : (C) Dummy
Description : If water table is encountered in the standard pit while conducting plate load test (a) The load test should be abandoned (b) The pit is considered unsafe (c) Test should be conducted ... continuously throughout the test duration (d) The bearing capacity of soil cannot be determined in this condition
Last Answer : (c) Test should be conducted with complete dewatering continuously throughout the test duration
Description : Prasad and Satish started a business with investments of Rs.2000 and Rs.5300 respectively. At the end of every month, Prasad invests Rs.300 while Satish withdraws Rs.300. What is the ratio in which they should share the profits at the end of one year. a)13:14 b)1:1 c)14:13 d)Cannot be determined
Last Answer : b)1:1
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`
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)`
Description : What Molecular orbital interactions are not possible because the atomic orbitals have overlapping electron densities.?
Last Answer : Need answer
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.
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 : 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 : 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
Description : When considering electron orbitals, which orbital is generally considered spherical?
Last Answer : ANSWER: S ORBITAL
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
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 : In how many elements does the electron have the quantum number of n =4 and l = 1 ?
Last Answer : In how many elements does the electron have the quantum number of n =4 and l = 1 ? A. 4 B. 6 C. 8 D. 10
Description : What could the fourth quantum number of 1s2 electron be?
Last Answer : Ms = + 1/2
Description : What information does the first quantum number of an electron?
Last Answer : The energy level the electron is in
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 : “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 : 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 : 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?
Description : In the modern quantum-based atomic theory what is the name given to a particular space around the nucleus in which an electron moves?
Last Answer : The name given to a particular space around the nucleus in whichan electron moves is Orbital
Description : What electron could have quantum numbers n 4 l 2 ml -2 ms -12?
Last Answer : What is the answer ?
Description : What electron could have quantum numbers n 4 l 2 ml -2 ms?
Last Answer : A 4d electron; that is for apex :)
Description : The _____ of a detector is the fraction of incident photons that produce a photoelectron or electron-hole pair ∙ a. Responsitivity ∙ b. Photon efficiency ∙ c. Aperture ∙ d. Quantum efficiency
Last Answer : d. Quantum efficiency
Description : No person can be employed in factories or mines unless he is above the age of– (1) 12 years (2) 14 years (3) 18 years (4) 20 years
Last Answer : (2) 14 years Explanation: An important fundamental right dealing with children is Article 24 which deals with prohibition of Employment of Children in Factories, etc. It states that no child below ... shall be employed to work in any factory or mine or engaged in any otherhazardous employment.
Description : A leaf spring consists of 3 extra full length leaves and 14 graduated length leaves. The maximum force that can act on the spring is 70kN and the distance between eyes of the spring is 1.2m. Width and thickness of the ... close the nip. (a) 4332.2N (b) 4674.1N (c) 4985.4N (d) Can't be determined
Last Answer : (b) 4674.1N