اختبار اختيار من متعدد تفاعلي: Atomic and Nuclear Physics Review

A

$2\pi r = n(\frac{h}{mv})$

B

$2\pi r = \frac{hf}{mv}$

C

$2\pi r = n^2\lambda$

D

$2\pi r = \frac{1}{2}mv^2$

A

Isotopes

B

Nucleons

C

Photons

D

Electrons

A

Mass number (A)

B

Atomic number (Z)

C

Neutron number (N)

D

Elementary charge (e)

A

The total number of protons and neutrons.

B

The number of neutrons in the nucleus.

C

The atomic number (the number of protons).

D

The total mass of the atom in kilograms.

A

92

B

235

C

143

D

327

A

80

B

120

C

200

D

280

A

15

B

8

C

7

D

23

A

{}_{1}^{1}H

B

{}_{1}^{2}H

C

{}_{1}^{3}H

D

{}_{1}^{4}H

A

They have different numbers of protons.

B

They have different numbers of neutrons.

C

They have different numbers of electrons.

D

They belong to different chemical elements.

A

Electromagnetic force

B

Gravitational force

C

Strong nuclear force

D

Weak nuclear force

A

Only between two protons.

B

Only between two neutrons.

C

Only between a proton and a neutron.

D

Between all nucleon pairs (p-p, n-n, and p-n) equally.

A

It is weaker but has an infinite range.

B

It is 10 times stronger and acts over the entire atom.

C

It is more than 100 \times stronger but only acts over a very short distance (1.4 × 10^-15 m).

D

It is exactly equal to the electromagnetic force but acts in the opposite direction.

A

The loss of electrons during beta decay.

B

The difference between the sum of the masses of individual nucleons and the actual mass of the assembled nucleus.

C

The increase in mass when an atom is ionized.

D

The mass of the neutrons alone in an isotope.

A

Because the strong nuclear force provides a much stronger attraction between them at short distances.

B

Because gravity is stronger than the electric force at the nuclear level.

C

Because neutrons have a negative charge that cancels the protons' charge.

D

Because the electrons inside the nucleus pull the protons inward.

A

0.002388 u

B

0.008665 u

C

0.009106 u

D

3.025155 u

A

2.22 MeV

B

7.48 MeV

C

8.48 MeV

D

931.49 MeV

A

0.048940 u

B

0.098940 u

C

0.113169 u

D

12.098940 u

A

92.16 MeV

B

105.44 MeV

C

106.18 MeV

D

127.62 MeV