atomic structure and isotopes

Question 1

what is the mass of a proton, electron and neutron

Answer 1

1
1/1836
1

Question 2

what is the charge of a proton, electron and neutron

Answer 2

+1
-1
0

Question 3

define isotopes

Answer 3

atoms of the same element with the same number of protons but different number of neutrons

Question 4

what do chemical properties depend on

Answer 4

electronic struture thus isotopes have the same chemical properties
no of electrons

Question 5

how do isotopes vary

Answer 5

in physical properties

e.g density

Question 6

define cation and anion

Answer 6

cation positively charged ion

anion negatively charged ion

Question 7

define realtive isotopic mass

Answer 7

the mass of an isotope compared to 1/12th the mass of one atom of carbon12

Question 8

define relative atomic mass

Answer 8

the weighted mean mass of an atom compared to 1/12th the mass of one atom of carbon12

Question 9

what does mass spectrometry measure

Answer 9

mass to charge ratio

Question 10

define relative molecular mass

Answer 10

the average mass of a molecule compared to 1/12th the mass of one atom of carbon12

Question 11

in what context is relative molecular mass and relative formula mass used

Answer 11

relative molecular mass used for easily defined structures in which you know the exact no of atoms
relative formula mass is used for giant structures in which you dont know the exact no of atoms