Atomic Structure

Question 1

Radius of an atom

Answer 1

1x 10-10 meters

Question 2

What is the basic structure of an atom

Answer 2

A positivity charge, nucleus composed of both protons and neutrons, surrounded by a negativity charged electron

Question 3

Describe the arrangement of electrons

Answer 3

Electrons are arranged at different distances from the nucleus

Question 4

How may the electron arrangement change?

Answer 4

With the absorption of electromagnetic radiation or by the emission of electromagnetic radiation

Question 5

Do atoms have overall electric charge

Answer 5

No

Question 6

Are some atomic nuclei unstable

Answer 6

Yes sir 👍

Question 7

What is the process of radioactive decay?

Answer 7

It’s when the nuclei are unstable, and so then the nucleus then. gives out radiation as it changes to become more stable

Question 8

What is activity the rate of?

Answer 8

Activity is the rate at which a source of unstable nuclei deacays

Question 9

What is activity measured in?

Answer 9

Becquerel (Bq)

Question 10

What is countrate?

Answer 10

It’s the number of decays recorded each second by a detector

Question 11

What is the detector which detects the decays

Answer 11

Geiger muller tube

Question 12

How is an alpha particle written

Answer 12

a

Question 13

How is an beta particle written

Answer 13

B

Question 14

How is an gamma ray written

Answer 14

Y

Question 15

Describe an alpha particle

Answer 15

Consist of two neutrons two protons, and is the same as a helium nucleus

Question 16

Describe an beta particle

Answer 16

It’s a high-speed electron ejected from the nucleus as a neutron turns into a proton

Question 17

Describe an gamma ray

Answer 17

An electromagnetic radiation from the nucleus

Question 18

Does the emission of cameras cost the mass charge of the nucleus to change?

Answer 18

Nah

Question 19

Is radioactive decay random

Answer 19

Yeh

Question 20

What is the half-life of a radioactive isotope?

Answer 20

The time it takes, for the number of nuclei of the isotope in a sample to halve ,or the time it takes for the count rate form a sample containing the isotope to fall to half of its initial level

Question 21

What is radioactive contamination?

Answer 21

It’s the unwanted presence of material containing radioactive atoms and other material

Question 22

What is the hazard from contamination? Due to

Answer 22

It’s due to the decay of contaminating, atoms the type of radiation admitted affect the level of hazard

Question 23

What is irradiation the process of

Answer 23

Is the process of exposing an object to nuclear radiation. The irritated object does not became radioactive.