0
If an atom has an atomic number of 8 and a mass of 18 how many protrons are in the atom?
Wiki User
∙ 12y ago
It has 8 protons. The atomic number of an atom = the number of protons.
The mass number is not needed in this problem. The mass number is the number of protons + number of neutrons.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
If an Atom has an atomic number of 12 What is the atomic number?
Atomic number depends on the number of protons and it doesn't matter how many neutrons there are in that case. Neutrons only contribute to the atomic weight. The atomic number is the same as any other atom of carbon: 6.
An atom's atomic number is?
it shows how many protons are present in an atom
How many protons does one atom of element Sodium?
The atomic number of an element gives its number of protons per atom. Sodium's atomic number is 11. Thus, sodium has 11 protons per atom.
How many protrons and neutrons does boron contain?
5 Protons, 6 Neutrons. For future reference, the protons is the atomic number (right above the element symbol) To get the neutrons you subtract the atomic mass (underneath the symbol) by the number of protons. You have to round this number.
What is the atomic number on a table that tells us how many of what are in an atom of the element?
The atomic number of an elemnt tells you how many protons are in the nucleus and therefore how many electrons thare are in a neutral atom. The mass number is the toal of protons and neutrons.
How Many protrons are in fluorine?
Flourine has the atomic number of 9. The atomic number determines the number of protons in an atom of the element, so there are 9 protons.
How many protrons and electrons are present in a potassium atom?
The same as the atomic number of potassium, 19 of each.
How many protrons does bromine have?
The atomic number of an element is equal to the number of protons in a single atom. Therefore, Bromine has 35 protons.
How many protrons does carbon have?
An atom's atomic number tells us the number of protons it has. Looking at a periodic table, we see that carbon's atomic number is 6. Thus, it has 6 protons.
How do you work out how many protrons in an element?
The number of protons is the atomic number of the element.
How many protrons are in a carbon atom?
there are six protrons
How many protrons does oxygen have?
8 protons. You obtain that from the atomic number.
How many protrons does zinc have?
Zinc has 30 protons. You can tell this by looking at its atomic number.
How many electron neutron and protrons are in an aluminum atom?
No. of electrons = No. of protons = Atomic No. =13 No. of neutrons=Atomic mass - No.of protons=27-13=14
How many protrons in holmium?
There are 67 protons in holmium. The atomic number of an element is the same as the number of protons.
How many protrons are in silicon?
Silicon, Si, atom number 14, has 14 protons in its nucleus.
How many protrons are the atom oxygen?
8
