Category : Chemistry

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

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The structure of an atom is an atom consists of a nucleus and a number of electrons present around the nucleus. All the three charges have a mass value and the mass of protons and neutrons together gives the mass of the nucleus i.e. the atomic mass of the element. The protons and neutrons make up the nucleus of the atom, which is surrounded by the electrons belonging to the atom. The atomic number of an element describes the total number of protons in its nucleus. Let's know more 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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