The number of electrons present in n = 2, l = 1 and m = -1, 0, +1 are:
Correct answer: A. 6
- A. 6
- B. 2
- C. 8
- D. 10
- E. 18
Explanation
n is the principal quantum number and indicates the number of shells. n = 2 indicates that the second shell is being discussed. l is the azimuthal quantum number and indicates the number of subshells. l = 0 means s subshell, l = 1 means p subshell, and so on. m is the magnetic quantum number and indicates the orientation of orbitals in the subshells. m ranges from -1 to +1 through 0. Since m = -1, 0, +1, this means that all three sub-orbitals; 2px, 2py, 2pz are taken into consideration. Since all of these have 2 electrons each, the total number of electrons in them is 6.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Atomic Structure
Atomic structure covers the discovery of the proton, Planck's quantum theory, hydrogen emission spectra and the evidence for quantized energy levels. You will use quantum numbers to describe orbitals, distinguish s, p, d and f orbital shapes, and write electronic configurations, including the correct order of electron filling.
Practise Atomic Structure
922 free Atomic Structure MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Atomic Structure questions
_ are such nuclei of an element that have the same atomic number Z, but have different mass number.
Which of following configuration is not correct according to Hund's rule:
The total number of lobes in all the orbitals of a d-subshell are:
The weight of an electron is:
Total number of electrons in Cu2+ for which the summation of azimuthal quantum number and magnetic quantum number is zero is:
Choose the correct set of quantum numbers for the Ne atom's electron of the second excited state: