Answer:
Carbon 12 and carbon 13
Carbon isotope 12 exist as 98.9%
Explanation:
Answer:
it is where the ozone layer is locate which is affected by human activities
Answer:
Ionic bonds are made by a transfer of electrons. Covalent bonds are made by sharing electrons.
Explanation:
For ionic bonds, use the group number to help you determine how many electrons an element can give or receive (Group 1 gives 1 electrons, group 2 gives 2 electrons, group 3A gives 3, group 5A receives 3, group 6A receives 2, and group 7A receives 1).
Covalent bonds have to be worked out using the total number of valence electrons and the octet rule.
They have similar chromosomes
