What is the mass of this isotope of beryllium?
9
How many neutrons does this isotope of chlorine have?
18
What is the top number for this isotope of magnesium?
15
How many NEUTRONS are in this isotope of lithium?
5
How many neutrons does this isotope of beryllium have?
5
What is the mass number of this isotope?
23
What is the mass of this isotope of chlorine?
35
How many protons does an atom have if it has 63 neutrons and a mass number of 99?
36
How many protons does this isotope of chlorine have?
17
How many neutrons does an atom have if it has 86 protons and a mass number of 201?
115
How many neutrons does an atom have if it has 41 protons and a mass number of 90?
49
How do you know that these isotopes are of the same element?
they have the same number of protons
What is the bottom number for this isotope of lithium?
3
How many protons does an atom have if it has 24 neutrons and a mass number of 39?
15
How many protons does this isotope of beryllium have?
4
Page 32: What does the "1" represent here?
the mass
What is the mass number of this isotope?
18
Page 32: What does the TOP number in isotope notation represent?
the mass number (protons + neutrons)
What is the mass of an atom that has 57 protons and 64 neutrons?
121
Page 32: What does the BOTTOM number in isotope notation represent?
the atomic number (protons)