Atomic Structure And Isotopes Flashcards
What do atoms consist of
A central nucleus with protons and neutrons
Electrons orbiting it in energy levels
What charge do protons have
+1
What charge do electrons have
-1
What charge do neutrons have
0
What is the mass of a proton
1
What mass is neutrons
1
What mass is electrons
(1/1836)
What is the mass number
The bottom number- the sum of protons and neutrons in an atom
How can mass number be represented
A
What is the atomic number
Equal to the number of protons in an atom. Top numbee
How is atomic number represented
Z
What are ions
Charged particles. Formed when atoms lose or gain electrons meaning it will have an overral charge
What are isotopes
Atoms of the same element with the same atomic number but with a different number of neutrons resulting in a different mass number
Why do neutral atoms of isotopes react chemically in the same way
Their proton number and electron configuration is the same so the sharing and transfer of electrons is unaffected
Different mass numbers= diff physical properties
What is the relative atomic mass (Ar)
The weighted mean mass of an atom of an element relative to one twelfth of the mean mass of an atom of the carbon-12 isotope
