Structure of Atom Test

Result

Structure of Atom Test - 23

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Weekly Quiz Competition

Question 1
4 / -1

The order of filling of electrons in the orbitals of an atom will be

A
3d, 4s, 4p, 4d, 5s

B
4s, 3d, 4p, 5s, 4d

C
5s, 4p, 3d, 4d, 5s

D
3d, 4p, 4s, 4d, 5s
Question 2
4 / -1

Which of the following relates to photons both as wave motion and as a stream of particles?

A
Interference

B
E = mc²

C
Diffraction

D
E = hv
Question 3
4 / -1

Which of the following represents the correct set of quantum numbers of a 4d electron?

A
4, 3, 2, +1/2

B
4, 2, 1, 0

C
4, 3, -2, +1/2

D
4, 2, 1, -1/2

Solution
Question 4
4 / -1

The energy of an electron in the nth Bohr orbit of hydrogen atom is

A
13.6/n⁴ eV

B
13.6/n³ eV

C
–13.6/n² eV

D
13.6/n eV

Solution
Question 5
4 / -1

Pick out the isoelectronic structures from the following:

A
I and II

B
III and IV

C
I and III

D
II, III and IV

Solution
Question 6
4 / -1

Which of the following is violation of Pauli’s exclusion principle?

A

B

C

D
Question 7
4 / -1

In which one of the following pairs of experimental observation and phenomenon, does the experimental observation correctly account for the phenomenon?

A
only a

B
b

C
c

D
d
Question 8
4 / -1

For which one of the following sets of four quantum numbers, an electron will have the highest energy?

A

B

C

D
Question 9
4 / -1

When an electron of charge e and mass m moves with a velocity v about the nuclear charge Ze in a circular orbit of radius r, the potential energy of the electron is given by

A
Ze²/r

B
- Ze²/r

C
Ze²/r

D
mv²/r.

Solution
Question 10
4 / -1

Atomic weight of an element is not necessarily whole number because

A
it contains electrons, protons and neutrons

B
it contains allotropic forms

C
atoms are no longer considered indivisible

D
it contains isotopes