Isotopes

Question 1

What is an isotope?

Answer 1

• atoms of the same element

- different nucleon numbers (mass numbers)

Question 2

Basically…

Answer 2

isotopes have the same number of protons/electrons but their mass numbers are different and this is because they have different a nucleon number

Question 3

alike (1)

Answer 3

-the same number of protons/electrons and are the same elements

Question 4

different (1)

Answer 4

• different number of nucleon numbers therefore different amounts of neutrons

Question 5

Alike (2)

Answer 5

have similar chemical properties. Atoms with the same number of electrons all react in a similar way and cuz isotopes have the same no. of electrons and also the same arrangement of valence electrons they will obey this rule.

Question 6

Different (2)

Answer 6

they have slightly diff physical properties like boiling points and melting points etc.

Question 7

what is a radioactive isotope

Answer 7

an isotope with unstable nuclei (too many protons/nucleons) is radioactive its the most artificial isotope and some naturally occurring ones eg.
14
C
6
when radioactive isotopes eject particles and radiation sometimes they get more stable and sometimes a diff. atom is produced

Question 8

how do you find relative mass of an element

Answer 8

eg. percentage of isotope= 75%
CL= 35, 17
Cl= 37, 17
75/100 x 35 + 25/100x 37
= 35.5 (mass number)

Question 9

What is the abundance of an isotope?

Answer 9

when isotopes of an element occur in different amounts in the sample of an element (atom percentages)