Answer the questions
Attachments:
Answers
Answered by
2
Answer:
1.Atoms of different elements with different atomic numbers but the same mass numbers called isobars
2.unit of mass used to express atomic and molecular weight equal to one twelfth of mass of an atom of carbon-13
Ex:a hydrogen -1 atom has mass of 1.007 u ( or da or amu)
3.Atoms of the most elements exist in the form of molecule or iron , since they are more active
Ex: hydrogen, oxygen, chlorine
4.since an iconic compound consists of an equal number of positive jobs and negative ions , so the overall charge on an ionic compound is zero
Ex: sodium chloride ( nacl ) is ionic compound which is made up of equal number of positively charged ions ( na+) and negatively charged ions ( cl-)
Similar questions