question_answer1) Wavelength of radio waves is
A) < microwaves done clear
B) > microwaves done clear
C) \[\le \]infrared waves done clear
D) \[\le \]UV rays done clear
View Solution play_arrowquestion_answer2) Which statement is true?
A) Spacing between energy levels n =1 and n = 2 in hydrogen atom is greater than that of n=2 and n = 3 done clear
B) Spacing between energy levels n = 1 and n = 2 in hydrogen atom is equal to that n = 2 and n = 3 done clear
C) Spacing between energy levels n = 1 and n =3 in hydrogen atom is less than that of n=2 and n = 3 done clear
D) None done clear
View Solution play_arrowA) 4 \[\to \] 2 done clear
B) 2 \[\to \] 4 done clear
C) 3 \[\to \] 6 done clear
D) 6 \[\to \] 2 done clear
View Solution play_arrowA) (iv) < (ii) < (iii) < (i) done clear
B) (ii) < (iv) < (i) < (iii) done clear
C) (i) < (iii) < (ii) < (iv) done clear
D) (iii) < (i) < (iv) < (ii) done clear
View Solution play_arrowquestion_answer5) Identify the incorrect statements
A) An electronic wave function must be symmetrical with respect to the interchange of any two electrons done clear
B) \[{{\psi }^{2}}\]must remain unchanged when the spin and space coordinates of the paired electrons are interchanged done clear
C) For an n electron system the wave function \[\psi \] will be a function of 3 n spatial coordinate done clear
D) Antisymmetrical wave function are found to represent the properties of electron. done clear
View Solution play_arrowA) \[2.1\times {{10}^{-34}}\] done clear
B) \[0.5\times {{10}^{-34}}\] done clear
C) \[2.1\times {{10}^{-28}}\] done clear
D) \[0.5\times {{10}^{-23}}\] done clear
View Solution play_arrowA) 4 \[\to \] 1 done clear
B) 2 \[\to \] 5 done clear
C) 3 \[\to \] 2 done clear
D) 5 \[\to \] 2 done clear
View Solution play_arrow(i) n = l,\[l\]= 0, m=0 |
(ii) n = 2,\[l\]= 0, m =0 |
(iii) n = 2,\[l\]= l ,m = l |
(iv) n = 3,\[l\]= 2, m = l |
(v) n = 3,\[l\]= 2, m = 0 |
A) (i) and (ii) done clear
B) (ii) and (iii) done clear
C) (iii) and (iv) done clear
D) (iv) and (v) done clear
View Solution play_arrowA) 1.73 done clear
B) 2.84 done clear
C) 4.90 done clear
D) 0 done clear
View Solution play_arrowA) \[1.52\times {{10}^{-4}}m\] done clear
B) \[5.10\times {{10}^{-3}}m\] done clear
C) \[1.92\times {{10}^{-3}}m\] done clear
D) \[3.84\times {{10}^{-3}}m\] done clear
View Solution play_arrowA) 594 nm done clear
B) 640 nm done clear
C) 700 nm done clear
D) 494 nm done clear
View Solution play_arrowA) \[0,\,0,\,\frac{h}{2\pi }\sqrt{6},\frac{h}{2\pi }\sqrt{2}\] done clear
B) \[1,\,1,\,\frac{h}{2\pi }\sqrt{4},\frac{h}{2\pi }\sqrt{2}\] done clear
C) \[0,\,1,\,\frac{h}{2\pi }\sqrt{4},\frac{h}{2\pi }\sqrt{3}\] done clear
D) \[0,\,0,\,\frac{h}{2\pi }\sqrt{20},\frac{h}{2\pi }\sqrt{6}\] done clear
View Solution play_arrowA) \[15200\,c{{m}^{-1}}\] done clear
B) \[60800\,c{{m}^{-1}}\] done clear
C) \[76000\,c{{m}^{-1}}\] done clear
D) \[136800\,c{{m}^{-1}}\] done clear
View Solution play_arrowA) -13.6eV done clear
B) -3.4eV done clear
C) -0.85eV done clear
D) -1.70eV done clear
View Solution play_arrowA) 0.75 m done clear
B) 0.75 cm done clear
C) 1.5m done clear
D) 2cm done clear
View Solution play_arrowquestion_answer16) Which of the following statements about quantum numbers is wrong:
A) If the value of\[l=0\], the electron distribution is spherical done clear
B) The shape of the orbital is given by subsidiary quantuir number. done clear
C) The Zeeman's effect is explained by magnetic quanturr number. done clear
D) The spin quantum number gives the orientations of electron cloud. done clear
View Solution play_arrowA) \[1.2\times {{10}^{14}}Hz\] done clear
B) \[8\times {{10}^{15}}Hz\] done clear
C) \[1.2\times {{10}^{16}}Hz\] done clear
D) \[4\times {{10}^{12}}Hz\] done clear
View Solution play_arrowquestion_answer18) The ratio of the radii of the three Bohr orbits is
A) 1:1/2:1/3 done clear
B) 1:2:3 done clear
C) 1:4:9 done clear
D) 1:8:27 done clear
View Solution play_arrowA) \[\Delta n=\frac{h}{2m\lambda }\] done clear
B) \[\Delta n=\frac{h}{\lambda }\] done clear
C) \[\left[ \frac{1}{{{v}_{0}}}-\frac{1}{v} \right]=\frac{m{{c}^{2}}}{h}\] done clear
D) \[\lambda =\sqrt{\frac{h}{2m\Delta n}}\] done clear
View Solution play_arrowquestion_answer20) The total spin and magnetic moment for the atom with atomic number 7 are:
A) \[\pm 3,\,\sqrt{3}BM\] done clear
B) \[\pm 1,\,\sqrt{8}BM\] done clear
C) \[\pm \frac{3}{2},\,\sqrt{15}BM\] done clear
D) \[0,\sqrt{8}BM\] done clear
View Solution play_arrowYou need to login to perform this action.
You will be redirected in
3 sec