Structure of Atom Test

Result

Structure of Atom Test - 11

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Weekly Quiz Competition

Question 1
4 / -1

The electron was shown experimentally to have wave properties by

A
de Broglie

B
Davisson and Germer

C
N. Bohr

D
Schrodinger
Question 2
4 / -1

An element M has an atomic mass 19 and atomic number 9, its ion is represented by

A
M⁺

B
M²⁺

C
M⁻

D
M²⁻
Question 3
4 / -1

The number of nodal planes in a p_x orbital is

A
one

B
two

C
three

D
zero
Question 4
4 / -1

For which of the following species, Bohr’s theory is not applicable?

A
Be³⁺

B
Li²⁺

C
He²⁺

D
H
Question 5
4 / -1

Identify the least stable among the following:

A
Li⁻

B
Be⁻

C
B⁻

D
C⁻q

Solution
Question 6
4 / -1

An element M has an atomic mass 19 and atomic number 9. Its ion is represented by

A
M⁺

B
M²⁺

C
M⁻

D
M²⁻
Question 7
4 / -1

Rutherford’s experiment which established the nuclear model of the atom used a beam of

A
β – particles which impinged on a metal foil and got absorbed

B
γ – rays which impinged on a metal foil and ejected electrons

C
helium atoms, which impinged on a metal foil and got scattered

D
helium nuclei, which impinged on a metal foil and got scattered
Question 8
4 / -1

If the nitrogen atom had electronic configuration 1s⁷, it would have energy lower than that of the normal ground state configuration1s²2s²2p³ because the electrons would be closer to the nucleus. Yet 1s⁷ is not observed. It violates

A
Heisenberg’s uncertainty principle

B
Hund’s rule

C
Pauli exclusion principle

D
Bohr postulate of stationary orbits
Question 9
4 / -1

The maximum number of electrons in a subshell having the same value of spin quantum number is given by

A
l + 2

B
2l + 1

C
l(l + 1)

D
Question 10
4 / -1

What is wrong about anode rays?

A
Their e/m ratio is constant

B
They are deflected by electrical and magnetic field

C
They are produced by ionisation of molecules of the residual gas

D
Their elm ratio depends on nature of residual gas

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Structure of Atom Test - 11

Result

Structure of Atom Test - 11

Score

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Rank

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SHARING IS CARING

Question 1

de Broglie

Davisson and Germer

N. Bohr

Schrodinger

Question 2

M+

M2+

M−

M2−

Question 3

one

two

three

zero

Question 4

Be3+

Li2+

He2+

H

Question 5

Li−

Be−

B−

C−q

Solution

Question 6

M+

M2+

M−

M2−

Question 7

β – particles which impinged on a metal foil and got absorbed

γ – rays which impinged on a metal foil and ejected electrons

helium atoms, which impinged on a metal foil and got scattered

helium nuclei, which impinged on a metal foil and got scattered

Question 8

Heisenberg’s uncertainty principle

Hund’s rule

Pauli exclusion principle

Bohr postulate of stationary orbits

Question 9

l + 2

2l + 1

l(l + 1)

Question 10

Their e/m ratio is constant

They are deflected by electrical and magnetic field

They are produced by ionisation of molecules of the residual gas

Their elm ratio depends on nature of residual gas

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M⁺

M²⁺

M⁻

M²⁻

Be³⁺

Li²⁺

He²⁺

Li⁻

Be⁻

B⁻

C⁻q

M⁺

M²⁺

M⁻

M²⁻