Nuclear Notation
Where does the atomic number go in nuclear notation?
The bottom left of the element symbol.
Does hyphen notation use the symbol of an element?
No, the full name of the element is used, not the symbol.
What is an isotope?
An isotope is an element that has 2 or more different atoms with the same number of protons but different numbers of neutrons.
The mass number of an atom is equal to the # of ___ + # of ___?
Protons + Neutrons
What happens when an atom has a charge?
In nuclear notation, where does the mass number go?
In the upper left corner of the element symbol.
True or False:
Hyphen notation includes the atomic number of an element.
False.
Hyphen notation only includes the mass number of an element.
Do isotopes of the same element chemically operate the same as each other?
Yes, they do.
The Atomic number of an atom represents the # of ___?
Protons
How do we get a positively charged ion?
How would you write Carbon-14 in nuclear notation?
14
C
6
How would you write oxygen in hyphen notation?
Oxygen-16
Does the mass number change in isotopes?
Yes, the mass number changes.
The # of protons is equal to the # of ___?
Electrons.
How do we get a negatively charged ion?
By gaining electrons.
How would you write Lithium-7 in nuclear notation?
7
Li
3
How would you write the most common isotope of hydrogen in hyphen notation?
Hydrogen-1.
Does the atomic number change in isotopes?
No, the atomic number does not change because isotopes of the same element have the same number of protons.
If an atom has an atomic # of 10 and a mass # of 22, how many neutrons are there?
12.
Do we add or take away protons to get ions?
No, we don't.
What element is:
11
B
5
Boron.
How would you write the element Cu in hyphen notation?
Copper-64.
When are isotopes the most stable?
When the number of protons and neutrons in the nucleus is the same.
If an atom has an atomic # of 36 and a mass # of 59, how many of EACH of the subatomic particles are there?
Protons: 36, Neutrons: 23, Electrons: 36.
What is the difference between an isotope and an ion?
An isotope is an element with different atoms that have different numbers of neutrons. An ion is an atom with a charge because we've taken away or added electrons.