SK015 2.2 Quantum Mechanical Model

Quantum Mechanical Model

by MISS FARAHIYAH OMAR

Multiple Choice

Region of high probability of finding an electron

• atomic orbital

• orbit

• atomic radius

• ground state

QUANTUM NUMBERS​

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Multiple Choice

The quantum number "n" represents:

• electron spin

• orbital

• sublevel

• main energy level

Multiple Choice

1.The size of s-orbital increases when the value of principal quantum number ______

• a.Decreases

• b.Increases

• c.Remains constant

• d.Fluctuates

Multiple Choice

Which of the following statements is true about 3s and 4s sublevel?

• These sublevels have same energy

• These sublevels are same distance from nucleus

• These sublevels hold different number of electrons

• These sublevels have same shape

Multiple Choice

What is the shape of s orbitals?

• Dumbbell shaped

• Diffused shaped

• Spherical shaped

• Clover leaf shaped

​orbital s:

m = 0

​1 orientation

​orbital p:

m= -1 , 0, +1

​3 orientations

orbital d:

m = -2, -1, 0,+1,+2

​5 orientations

SHAPE OF ORBITAL​

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Multiple Choice

How many electrons does p subshell have ?

• 2

• 10

• 6

• 14

Multiple Choice

How many electrons can each p orbital hold?

• 6

• 3

• 2

• 4

Multiple Choice

How many atomic orbitals are there in the d sublevel?

• 1

• 3

• 5

• 7

Multiple Choice

What are the orbitals for n=4

• s

• s, p

• s, p, d

• s, p, d, f

Multiple Choice

The maximum number of electrons that can fit into the 2nd energy level is

• 2

• 8

• 18

• 32