answersLogoWhite

0


Best Answer

number of protons and electrons present in an element is equal to the atomic number of that element while number of neutrons is equal to mass number - atomic number/number of protons/number of electrons.

User Avatar

Wiki User

15y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

13y ago

Well to find the protons and electrons mostly when using the atomic number is usually pretty well easy. The atomic number is exactly the same as how many protons an element has, or electrons. Using the Atomic Mass, to find protons, electrons, and neutrons is that it usually equals the number of protons plus neutrons.

This answer is:
User Avatar

User Avatar

Wiki User

12y ago

If I remember from Chemistry correctly, the atomic number is the amount of protons and electrons in an element. You can use the acronym APE.

A--Atomic number/weight

P--number of Protons

E--number of Electrons

The mass number is the number of protons and neutrons combined.

For example, if you have an element with an atomic weight of 11, you know it has 11 protons and electrons. And if you know its mass number is 30, then you find the number of neutrons by doing 30-11=19.

I hope that helps.

This answer is:
User Avatar

User Avatar

Wiki User

12y ago

The numbers of protons and of electrons in an atom are both the same as the atomic number, and the difference between the mass number and the atomic number is the number of neutrons in the atom.

This answer is:
User Avatar

User Avatar

Wiki User

11y ago

Atomic number = number of protons.

Atomic number = number of electrons (provided the atom is electrically neutral).

Here's the trick for number of neutrons: take the mass number, round it to the nearest whole number, then subtract the atomic number from it.

Example of all 3:

Sodium (Na) has an atomic number of 11, so that's 11 protons and 11 electrons. Mass number is 22.9, which rounds to 23. 23-11=12, so 12 neutrons.

This answer is:
User Avatar

User Avatar

Wiki User

10y ago

Atomic number is the number of protons in an atom. In a neutral atom the numbers of protons and electrons are equal. So if you know the atomic number of a neutral atom, you will also know the numbers of protons and electrons.

Mass number is the sum of protons and neutrons in a particular isotope of an atom. Since atomic number is the number of protons in an atom, subtract the atomic number (or number of protons) from the mass number to get the number of neutrons. Mass no. - atomic no. = no. of neutrons or mass no. - no. of protons = no. of neutrons.

This answer is:
User Avatar

User Avatar

Wiki User

12y ago

If you take the atomic mass and round it to the nearest whole number. Then you take that number and subtrat the atomic number from it in order to determine the number of neutrons.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How you can use an atomss mass number and atomic number to determine the number of protons electrons and neutrons in the atom?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Earth Science
Related questions

How you can determine the number of protons electrons and neutrons an atom has from an atom's mass number and its atomic number?

To determine the number of protons, look at the atomic number. The number of electrons is also the atomic number.To find the number of neutrons subtract the atomic number from the Atomic Mass number.


How do you determine the number of protons electrons and neutrons present in an element by identifying its atomic and mass numbers from the periodic table?

Atomic number means number of protons present in an atom. Atomic number= number of protons. mass number = number of neutrons+ number of protons. So if you subtract the number of protons you get neutrons and if you subtract neutrons you get protons. mass number - protons= neutrons Mass number - neutrons = protons.


What particles are added together to determine atomic mass?

The number of protons, neutrons and electrons.


Do valence electrons determine the atomic mass?

No, the valance electrons determine the charge, the atomic number is determined by the number of protons. Generally, electrons are equal to protons, but in ions it is different, so use protons.


What information can you gather knowing the atomic number and mass of an element?

If you know the atomic no. and atomic mass, then the no. of electrons, no. of protons and no. of neutrons can also be determined. Atomic No.=No. of electrons = No. of protons. No. of neutrons=Atomic mass-Atomic no. Also, by no. of electrons you can determine its valency and the no. of valence electrons.


If a neutral atom has a mass of 12 amu and an atomic number of 5 determine the number of protons neutrons and electrons in the atom.?

Protons: 5 Neutrons: 7 Electrons: 5


What are the number of protons neutrons and electrons in an element?

Number of protons = Number of electrons = Atomic number Number of neutrons = Atomic number - Number of protons


How do you determine the numbers of the three types of particles in each atom?

In an atom, no. of protons = no. of electrons=atomic no. no. of neutrons=atomic mass-atomic no.


How many protons neutrons and electrons are found in phosphorous?

Phosphorus has an atomic no. of 15 and its atomic mass is 31.=we know,atomic no.=number of protons==also, atomic mass=no.of protons+no. of neutrons==this implies, 31=15+no. of neutrons= 31-15=no. of neutrons= 16=no. of neutrons==also,no. of protons=no, of electrons=so, total no. of protons=15total no. of electrons=15total no. of neutrons=16


Atomic particles located in the nucleus?

Neutrons and protons.


What is the number of protons in the necleus?

# of protons = # of electrons # of protons/ electrons + # of neutrons = atomic mass


How many protons neutrons electrons atomic number and atomic mass does bromine have?

Protons - 35 Neutrons - 43 Atomic Number - 35 Electrons - 35