Physics question and answers for October 10, 2023
- Q Name the members of the lanthanoid series which exhibit 4 oxidation states and those which exhibit 2 oxidation states Try to correlate this type of behaviour with the electronic configurations...
- Q How many orbitals are associated with 4th energy 74 level 1 4 2 9 3 16 4 7 2 2 1 4 2 4T 2 9 2 2m 3 16...
- Q If a particle of mass 1 mg is moving with a velocity of 400 ms then the de Broglie wavelength of the moving particle will be h 6 6 x...
- Q TYPE questions Each question has 4 choices 1 Read More Polarity in a molecule and hence the dipole moment depends primarily on electronegativity of the constituent atoms and shape of...
- Q According to VBT which of the following overlapping results pi bond covalent bond in 0 molecule formation when z axis is internuclear axis 1 2s 2s 1 III 1s 1s...
- Q 4 Which of the following is correctly matched Orbital a 4 f b 4 s c 3 d d 3 p Ans c Nodal property 2 radial node 0 nodal...
- Q For H atom the energy required for the removal of electron from various sub shells is given as under 3s 3p 3d 1 0 0 The order of the energies...
- Q Mg Which one of the following set of quantum numbers is not possible for 4p electron 2019 1 a n 4 7 1 m 1 m 2 b n 4...
- Q Uncertainty in the position of an electron mass 9 1 x 10 31 kg moving with a velocity of 300 ms 1 accurate upto 0 001 will be uestion Type...
- Q 3 2 83 Square planar 4 1 73 Square planar A compound of vanadium chloride has spin only 63 magnetic moment of 1 73 BM The formula of molecule is...
- Q ALLEN In an atom an electron is moving with a speed 75 of 600 m s with a uncertainty of 0 05 uncertainty in position of electron can be located...
- Q 3 K Fe CN C13 4 K Fe CN Which of the following option is correct 1 Ce solution are widely used as oxidizing agent in volumetric analysis 2 Ce...
- Q In which of the following transition maximum energy radiation will be emitted for He ion estion Type Single Correct Type 1 2 3 4 n 5 to n 2 n...
- Q 4 5 3 For given transitions order of wavelength of 49 feug vi for free trained a photon emitted will be A 6 4 C 3 1 1 AAA 2...
- Q Which of the following sets of quantum number is not possible Question Type Single Correct Type 1 2 3 4 n 3 l 2 m 0 ms 1 2 n...
- Q 4 X 1 Find the uncertainty in position of an electron if the uncertainty in velocity is 50 of uncertainty in position Question Type Single Correct Type 1 2 3...
- Q s pd f e Decreasing effective nucical ii Within a shell the effective nuclear charge decrease with increase in the azimuthal quantum of the electron Isrladire un ns np nd...
- Q The energy required for the excitation of 1 10 liter of hydrogen gas at one atmosphere pressure and 298K to the first excited state of atomic hydrogen approximately B DE...
- Q If ao be the radius of first Bohr s orbit of H atom the de Broglie s wavelength of an electron revolving in the third Bohr s orbit will be...
- Q ALLEN 0 1 mole of each of A B and A B compounds 69 have mass of 4g and 8g respectively What are the atomic masses of A and B...
- Q The wavelengths of the Ka X ray radiations from two sources P and Q are 1 50 ar 75 A 1 A 10 10m Then most likely A P 41Nb...
- Q 9 a Elements A B C and D have atomic numbers 12 19 29 and 36 respectively On the basis of electronic configuration write to which group of the periodic...
- Q When a mole of photons of wavelength 5000A incident of lodine molecules present in 1Lt container it shows pressure of 8 21 atm at 300K then calculate kinetic energy of...
- Q Which is correct statement about proton A proton is the nucleus of deuterium B proton is alpha particles C proton is ionized hydrogen molecules D proton is ionized hydrogen atom
- Q Species Het Li Be 3 H He No of orbit radius in A Velocity of n of orbit electron m sec 2 1 587 4 36 x 10 Total energy...
- Q Assuming nuclei and atoms to be spherical their radii are known to be of the order of 10 13 cm and 10 8 cm respectively The fraction atomic volume occupied...
- Q Which of the following statements is correct for spin quantum number I 2 indicates clockwise spin 1 2 indicates anti clockwise spin
- Q If in earlier days there were not any adv ance technology then how scientists w here able to discover the different types of elements and how the were also abl...
- Q The wave functions of 1s and 2s atomic orbitals possess Same angular radial parts Same radial part but different angular part
- Q Note Magnetic quantum number also represents quantized value of z component of angular momentum of the electron in an orbital through the expression Lz m h 2 If 0 is...
- Q 0 In the hypothetical molecule AX L where A is central atom X is surrounding atom L is lone pair n is the number of lone pair for which possible...
- Q 101 The energy functional from a trial wave function is E a a 3a 6 The variationally optimized energy is a 2 b 3 100 8 c N W is...
- Q 4 2l 2 9 The possible exchanges for a de configuration is 1 4 2 10 3 8 4 6
- Q Which of the following statements is are correct 1 There are 5 orbitals in the subshell 2 The d orbitals can accommodate 14 electrons 3 The first shell contain s...
- Q 13 3 The ions O F Na Mg2 and Al are isoelectronic Their ionic radii show a a decrease from O to F and then increase from Na to Al...
- Q Which of the following statements is correct a Xion is larger in size than X atom b Xion is larger in size than X atom c X and Xions are...
- Q 09 A number is chosen from all numbers of digits can be made with the digits 0 1 2 3 4 5 Probability that the number is divisible by 3...
- Q This quantum number is designated by the symbol m To explain splitting of a single spectral line into a number of closely spaced lines in the presence of magnetic field...
- Q 3 JAY V 2751 51 The number of angular nodes in 3d orbital is 2 2 1 1 3 0 4 3 52 In the reaction 2NaOH H PO Na...
- Q A certain dye absorbs light of 1 4530 and then fluorescence light of 5080 Assuming that under given conditions 47 of the absorbed energy is re emitted out as fluorescence...
- Q Plancks Quantum Theory Photoelectric Effect 1 Assume that 10 17 J of light energy is needed by the interior of the human eye to see an object How ma photons...
- Q When electromagnetic radiation of wavelength 300 nm falls on the suface of sodium electrons are emitted wi a kinetic energy of 1 68 x 105 J mol What is the...
- Q B 517 nm C 1010 nm D 205 nm The thereshold frequency vo for a metal for a metal is 7 0 x 10 4 s Calculate the kinetic energy...
- Q I will be taking an question to help you know what is my d oubt Let the example be A electron makes transition from 7th energy state to 2nd s...
- Q A 3 33 B 4 33 K The packing fraction in the CsCl structure with anion anion contact along with anion cation contact will be CS CI TC TC A...
- Q 2 15 points Calculate the probability that an electron described by a hydrogen atomic 1s wave function will be found within a 34 ao of the nucleu 5 within 1...
- Q C most part of the atom is empty space D alpha particles move with high speed For a wave frequency is 10 Hz and wavelength is 2 5 m How...
- Q A 10 sec He B 20 sec 0 C 25 sec CO D 55 sec CO The ionization energy of the ground state hydrogen atom is 2 18x10 18 J...
- Q What is the advantage of squaring the wave function and then plotting against distance from the nucleus 1 Function becomes continuous 2 All the values becomes positive 3 Wave function...
- Q How long would it take a radio wave of frequency 6 10 sec to travel from mars to the earth a distance of 8 x 107 km Rutherfords experiment which...
- Q Rutherfords experiment which established the nuclear model of atom used a beam of A B particles which impinged on a metal foil and get absorbed B y rays which impinged...
- Q Atomic radius is of the order of 10 8 cm and nuclear radius is of the order of 10 13 cm Calculate what fraction of atom is occupied by nucleus...
- Q A 600 W mercury lamp emits monochromatic radiation of wavelength 331 3 nm How many photons are emitted from the lamp per second h 6 6260 10 34 Js velocity...
- Q How to memorize this When we are asked to write electronic configuration of big ger elements what can be done to solve the question wit hin a minute Following is...
- Q 1 Discusss the similarities and differences between a Is and a 2s orbital 2 Which quantum number tends to specify the orientation in space for an orbital 3 Which is...
- Q 2 42 In the Bohr s model for unielectronic species following symbols are used Radius of nth orbit with atomic number z Potential energy of electron in nth orbit with...
- Q max According to photoelectric equation K hv The photoelectric emission will not be possible if I K is negative II max III K is positive max a I and II...
- Q ao IIT Academy What should be the ratio of the radii of the second orbit of Li 2 ion and the third orbit of Bet ion 0 B 16 27...
- Q The electron in a hydrogen atom makes a transition from an excited state to the ground state Which of the following statements is correct Its kinetic energy increases and its...
- Q 3 A gas is found to contain 2 34 g of nitrogen and 5 34 g of oxygen Simplest formula of the compound is 1 N O 3 N O...
- Q Which of the following statements about Avogadro s law is correct A At constant temperature and pressure equal volumes of all gases contain same number of molecules B The number...
- Q Which one of the following was concluded from Rutherford s alpha particle scattering experiment A Electrons have negative charge B Most of the space in atom is empty Neutron exists...
- Q The ionization energy of He is 19 6 10 18 J per atom Phe energy of the second stationary state in Li2 ion will be 214 4 9 10 18...
- Q The correct statement on the aufbau principle is that n 1 d subshell is always lower in energy than ns orbital B n 1 f subshell is always has energy...
- Q 3 5 44 x 10 19 Cal 4 5 44 x 10 19 erg 0 5 g particle has 2 x 10 m uncertainity in position find the uncertainty in...
- Q 6 626 x 10 Js The expression of radius of a Bohr orbit in a hydrogen like species is 4n m Ze 4neo h A C 2 r n r...
- Q 53 The overall formation constant for the reaction of 6 mol of CN with Cobalt II is 1 x 10 9 The formation constant for the reaction of 6 mol...
- Q State Heisenberg s uncertainty principle Calculate the uncertainity in the position of an electron in its velocity is i 0 001 ii zero Given velocity of electron 300m s State...
- Q Which of the following staternents regarding Bohr theory of hydrogen atom is not correct A The ionization energy of atom is equal to the energy equivalent to Rydberg constant Speed...
- Q Knowing precisely all the components of a non zero angular momentum of the electron in a hydrogen atom would violate Heisenberg s uncertainty principle The radial probability distribution function P...
- Q Here N is the number of electrons having parallel spins As the number of parallel spins increases the exchange energy also increases The exchange means the shifting of electrons from...
- Q Which of the following statement s is are correct for a decay a when there is imblanace of number of neutrons and protons for stability a B particle is emitt...
- Q Given for H atom 1 1 9 3 a R r where 3 2 2Zr nao Orbital is 3s 4xr R r 6 60 0 e 0 2 Select the...
- Q 1 Calculate the uncertanity in position assuming that the uncertainity in determining the momentum is 0 1 for an electron moving in an atom with a velocity of 2 2x10...
- Q What possibly can be the ratio of the de Broglie wavelengths for two electrons each having zero initial energy and accelerated through 50 volts and 200 volts A 3 10...
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