Atomic Structure

Question 1

What is the approximate radius of an atom?

Answer 1

1 × 10 -10 m

Question 2

DELETE

Answer 2

DELETE

Question 3

What happens when an electron losEs energy

Answer 3

EM radiation is emmitEd

Question 4

How can an electron gAin energy

Answer 4

by Absorbing EM radiation

Question 5

What happens in alpha decay?

Answer 5

Mass number -4

Atomic Number -2

Question 6

What happens in beta decay?

Answer 6

Mass number = same

Atomic number +1

Question 7

In beta decay why does the atomic number increase by 1

N–> P

Answer 7

one of it’s NEUTRONS has turned into a proton

Question 8

What is radioactive decay?

Answer 8

when nuclear radiation is emitted by UNSTABLE atomic nuclei, so they can become more stable

Question 9

What type of process is radioactive decay

Answer 9

RANDOM process

Question 10

What are gamma rays?

Answer 10

short wavelength, high frequency wavelengths

Question 11

What happens in Gamma Decay

Answer 11

the mass and atomic number stays the same, just add gamma at the end γ

Question 12

Neutron decay (emission)

Answer 12

emission of a neutron from an unstable nucleus, can cause stable atoms to become radioactive