Category : Chemistry

Atomic Structure Quiz: How Much You Know About Atomic Structure?

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Questions & Options


1. Neutron is a fundamental particle which have:-

183402 +1 unit charge and 1 unit mass
183403 No charge and 1 unit mass
183404 Have no charge and mass
183405 Have -1 unit charge and 1 unit mass

2. Na+ is isoelectronic with:-

183406 Li+
183407 Mg+²
183408 Ca+²
183409 Ba+²

3. What is the number of unpaired electrons in 1s², 2s²2p⁴?

183410 4
183411 2
183412 0
183413 1

4. Principal quantum number represents:-

183414 Shape of orbital
183415 Distance between nucleus and electron
183416 No. of electron in one shell
183417 No. of orbitals in one shell

5. Unpaired electron present in Cr+³...

183418 3
183419 1
183420 2
183421 5

6. Which of the following pair is isoelectronic?

183422 Ca, Ar
183423 Mg, Na+
183424 Ag, Sn
183425 Ar, Clˉ

7. Which of the following set of quantum numbers (n,l,m,s) is not correct:-

183426 3, 1, 0, -1/2
183427 3, 2, 1, +1/2
183428 3, 1, 2, -1/2
183429 3, 2, 0, +1/2

8. If the Hydrogen atom is excited by giving 8.4ev energy, then no. of emitted, spectrum line will be:-

183430 None
183431 Two
183432 Three
183433 Four

9. No. of unpaired electron present in an inert gas...

183434 5
183435 3
183436 0
183437 2

10. Which of the following is incorrect for n=5 and m=3?

183438 l=4
183439 l=3
183440 l=0, 1, 2, 3
183441 s= +1/2

11. An element M has 25 protons. The no. of electrons in its M+² cation will be...

183442 25
183443 24
183444 23
183445 22

12. Maximum frequency of emission is obtained for the transition...

183446 N=2 to N=1
183447 N=6 to N=2
183448 N=1 to N=2
183449 N=2 to N=6
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