1. Which subshell has only tive örbitals a.2 d. 3 2. Atomic spectra are due to t

Question

1. Which subshell has only tive örbitals a.2 d. 3 2. Atomic spectra are due to the changes in the energy of electrons. a. protons. b. neutrons. c. nuclei. e. electromagnetic radiation. 3. A shell is defined by a. b. c. the e quantum number. the me quantum number. the ms quantum number. d. the n quantum number. e. both the and me quantum numbers. 4. Which of the following types of electromagnetic radiation has the shortest wavelength? a. gamma rays b. X-rays c. radio waves d. infrared e. visible 5. Which of the following represents an s orbital? a. d. b. e. C. 6. Which of the following elements has the ground-state electron configuration 1s 23 2p a. Al b. S c. Cl d. P e. Ar

Explanation / Answer

1ans:- (a) l=2

For orbital Quantum number ( l ) = 2 , there are total five d orbitals , which can be calculated as -2,-1,0,+1,+2orbitals.

Note:- total number of orbitals easily calculated with the help of l value .

i.e no. of orbitals= -l..........0.........+l .

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