MDCAT CHEMISTRY-Atomic Structure (SMART INSTITUTE)

A visually engaging educational graphic depicting atomic structure, quantum numbers, and electronic configurations, with vibrant colors and diagrams to appeal to science students.

Master the Atom: MDCAT Chemistry Quiz

Test your knowledge of atomic structure with our engaging MDCAT Chemistry quiz! This quiz is designed for students preparing for the MDCAT examination and covers essential concepts in atomic structure and quantum mechanics.

Get ready to challenge yourself with questions that will enhance your understanding of:

Quantum numbers
Electronic configurations
Orbital shapes
Ionic species
The behavior of subatomic particles

60 Questions15 MinutesCreated by ExploringScience101

01-The correct set of four quantum numbers for the valence electron of Rubidium (Z=37) is:

N=5, l=0, m=0 ,and s=+1/2

N=5, l=1, m=0 and s=1/2

N=5, l=1, m=1, and s=+1/2

N=6, l=0,m=0 and s=+1/2

02-The electronic configuration of K(19) is:

1s3 2s3 2p5 3s3 3p5

1s2 2s2 2p6 3s2 2p5 4s2

1s2 2s2 2p6 3s2 3p6 4s1

1s2 2s2 2p6 3s0 3p6 4s3

03-The number of d-electrons in Fe+2 (Z=26) is not equal to:

P electrons in Ne (Z=10)

D electrons in Fe (Z=26)

S electrons in Mg (Z=12)

P electrons in Ar (Z=18)

04-The electronic configuration of an element is 1s2 2s2 2p3. This represents a/an:

Ground state

Hybridization state

Excited state

Molecular state

05-In WOF, all have same number of electrons:

Cl-, Br- and I-

H-, H and H+

F-, Ne and Na+

Li+, Na+ and K+

06-Identify the correct order of decreasing energy:

3s>2s>1s

2s>3s>1s

1s>2s>3s

1s>3s>2s

07-The shapes of s orbitals is circular and their size:

Increases with the increase in principle quantum number

Decreases with the increase in principle quantum number

Remains the same with the change in principal quantum number

None of above

08-Quantum number which is not derived from Schrodinger wave equation.

Principal

Magnetic

Azimuthal

Spin

09-Shapes of p orbitals:

Circular

Dumb-bell

Elliptical

Complex

10-Correct number of degenerate orbitals:

P=6, d=10, f=14

P=1, d=5, f=7

P=3, d=5, f=7

P=3, d=7, f=5

11-The ion that is iso-electronic with Cl atom is:

CN -

O2 +

N2 -

O2 -

12-WOF particles would on losing an electron has its outermost p-orbital as half filled

N atom

O+ ion

P-1 ion

S+1 ion

13-The ionic specie having more electrons than neutrons is:

Mg+2

O2-

Na+

F-1

14-Which pair of electrons of elements will have the same chemical properties.

2, 24

2, 4

13, 22

3, 11

15-An orbital which is spherically symmetrical is:

P-orbital

S-orbital

D-orbital

F-orbital

16-The value of e/m for the electron is:

1.7588 x 10^11 kgC-1

1.7588 x 10^-11

1.7588 x 10611 kgC-1

1.7588 x 10^11 Ckg-1

17-A nodal plane in an orbital is the plane where electron density is:

Maximum

Infinity

Zero

Minimum

18-How many times the mass of neutron is greater than mass of electron.

1480

2000

1840

1200

19-The mass of an oxygen atom is:

2.657 x 10-23 g

2.657 x 10^23

16 g

32g

20-The mass of neutron is

Same as that of proton

A little bit smaller than that of proton

Slightly more than that of proton

Slightly less than that of proton

21-The smallest charge of electricity which has been measured on any particle is:

Charge on the beta rays

Charge on @ rate

Charge on positive rays of He gas

Charge on an electron

22-The mass of proton is:

9.1 x 10^-10 g

9.1 x 10^-18 g

1.672 x 10^27 kg

9.1 x 10^-31 g

23-The d-orbital which is bi-lobed with collar is represented as

Dxy

Dz2

Dyz

Dx2-y2

24-The correct electronic configuration of Cu-29 is

25-WOF ion has similar electronic configuration like Ar

Sc+2

Cr+2

Ti+4

Mn+6

26-The incorrect statement about d-orbitals

It is not present in first two principle energy levels

They are associated with transition elements

They are five degenerate orbitals in d-subshell

D-orbitals can be filled before p-orbitals in the same principle energy level

27-The shape of d-subshell is

Spherical

Sausage

Dumbell

Complicated

28-Incorrect information about an orbit is

Circular path for electrons at definite distance from the nucleus

Gives the idea of three dimensional arrangement of electrons

Gives no idea of clock wise of anticlockwise spin of electron

Can accomodate maximum number of electron according to 2n^2 formula

29-The mass of @-particle is equal to:

Four times the mass of one proton

That of one electron

That of one hydrogen atom

That of one proton

30-Which is not decay product free neutron

Proton

Neutron

Electron

Anti-neutrino

31-Quantum number values for 3p orbital are:

N=0, l=3

N=2, l=1

N=3, l=1

N=2, l=3

32-WOF nuclear fundamental sub-atomic particle is negatively charged

Electron

Neutron

Proton

None of these

33-Which of following has minimum e/m value.

Proton

Electron

Neutron

@-particles

34-Charge on 1 kg of electrons is;

9.1 x 10^-31 C

1.6 X10^19 C

1.7588 X 10^11 C

35-WOF has maximum size

All have same size

36-Maximum number of electrons that can be accommodated in p-orbital.

37-Valence of electron of K has ......... Value for spin quantum number with......... spin.

+1/2, clockwise

+1/2, anticlockwise

38--1/2, clockwise

-1/2, anticlockwise

38-WOF quantum number is not mathematically obtained from Schrodinger wave equation

Principal quantum number

Magnetic quantum number

Azimuthal quantum number

Spin quantum number

39-The maximum number of electrons in electronic configuration can be calculated by using formula

2l+1

2n^2

2n^2 + 2

2n^2 + 1

49-The rule(s) for filling electrons in subshells of atoms is/are

Aufbau's principle

Hund's rule

Pauli exclusion principle

All of these

41--In electronic configuration of Cu or Cr WOF is violated?

Aufbau's principle

Hund's rule

Pauli exclusion principle

All are followed

42-WOF violates Hund's rule

1s2 ,2s2 ,2px1 ,2py1, 2pz1

1s2, 2s1

1s2 ,2s2 ,2px2 ,2py2, 2pz1

1s2 ,2s2 ,2px2

43-Maximum possible values of n+l are

44-The atomic number of an element is 26.How many electrons are present in M-Shell of this element in ground state?

45-The electronic configuration of Gold Au-79 is:

[Xe] 4f14 , 5d10 ,6s1

[Xe]4f14 ,5d9

[Xe]4f10 ,5d10 ,6s2

[Xe]4f14 , 5d10

46-WOF orbital is bi-lobed.

Dxy

Dx2-y2

Dyz

Dz2

47-WOF represents most stable configuration of three electrons for ground state of an element in group IIIA

Npx2 , npy1 ,npz0

Npx3 ,npy0 , npz0

Npx1 , npy1 ,npz1

Npx0 ,npy1,npz2

48-WOF electronic configuration represents an element that form a simple ion with -3 charge.

1s2 ,2s2,2p6 ,3s2 ,3p1

1s2 ,2s2,2p6 ,3s1

1s2 ,2s2,2p6 ,3s2 ,3p3

1s2 , 2s2 ,2p1

49-WOF on losing an electron have half filled set filled set of p-orbitals

N-

P+

O+

50-Which property is same for two nuclides Ar-40 and K-40

Number of electrons

Number of nucleons

Number of neutrons

Number of protons

51.............is/are isoelectronic with K+

P-3

S-2

Si-4

All of these

52-Fourth shell can accommodate 32 electrons how many electron can be placed in 5th shell

53-Number of orbitals required to place all electrons of an element with atomic number 30

Can't be predicted

54-A specie Z has following electronic configuration

1s2 ,2s2 ,2px2 ,2py2,2pz2 ,3s2 ,3px2 ,3py1 ,3pz1

What could Z be:

Ar+2

S-2

Cl-

P-3

55. A p-orbital has .... Energy than the s-orbital of same principle quantum number

Lower

Equal

Higher

First 2 answes

56-Total number of neutrons in Ga (Z=31 ,A=68) are

57-Total number of fundamental nuclear sub-atomic particles are there in an atom

More than 100

Less than 100

58-WOF has 5 unpaired electron in d-sub-shell

Mn (Z=25)

Fe+3

Cr (Z=24)

All of these

59-Correct orderly representation of d-orbitals is

60-The correct set of quantum numbers is

N=2 , l=1, m=0, s=+1/2

N=2 , l=0, m=0, s=+1/2

N=2 , l=1, m=-2, s=+1/2

N=2 , l=2, m=-2, s=0

MDCAT CHEMISTRY-Atomic Structure (SMART INSTITUTE)

Master the Atom: MDCAT Chemistry Quiz

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