Atomic Structure

Question 1

Relative mass of proton. Electron. Neutron?

Answer 1

1

1/2000

1

Question 2

Relative charge of proton. Neutron. Electron

Answer 2

+1

-1

0

Question 3

What’s is the neutron no.

Answer 3

Mass no. - atomic no.

Question 4

What is mass no. ?

Answer 4

Proton + neutron

Question 5

How do electrons move around

Answer 5

In electron shells surrounding the nucleus

Question 6

How are electrons arranged in electron shells

Answer 6

Based on energy lvls

2 in first es
8 in next 2 es

Question 7

What are isotopes?

Answer 7

Atoms of the same element have different masses due to different number of neutrons in their nucleus , but same number of protons

Question 8

What if atoms have

1) diff no. Of protons
2) diff no. Of protons but same no. Of neutrons
3) lose electron
4) gain electron
5) join w atoms

Answer 8

1) diff element
2) isotopes
3) positive ions
4) negative ion
5) molecule

Question 9

Properties of Isotopes

Answer 9

Same chem properties

–> since only e- involved in chem reactions and p= e

slightly diff physical properties

affected by mass

mass no.= p+n (and neutron diff)