answersLogoWhite

0


Best Answer

Except for ions, the number of electrons in an atom are equal to the number of protons. The atomic number will tell you the number of protons, and consequently the number of electrons in an electrically neutral atom.

In the case of an ion, adjust the number by the indicated charge; for example Na+1 will have 11 (the atomic number of Na) - 1 (since electrons have a negative charge, you subtract the charge) = 10 electrons.

User Avatar

Wiki User

13y ago
This answer is:
User Avatar
More answers
User Avatar

AnswerBot

3w ago

The number of electrons in an atom is equal to the number of protons in its nucleus, which is the atomic number of the element. This information can be found on the Periodic Table. Electrons are negatively charged particles that balance out the positive charge of protons in the nucleus to keep the atom electrically neutral.

This answer is:
User Avatar

User Avatar

Wiki User

15y ago

Atoms are neutral, meaning they have the same number of protons as electrons. The number of protons is called the atomic number (it is the little number on top of an element's symbol on the periodic table). So the atomic number tells us not only the number of protons, but also the number of electrons too (since they are the same amount).

This answer is:
User Avatar

User Avatar

Wiki User

12y ago

the # of electrons and protons is the same as the atomic #

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How do you know how many electrons are in an atom?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

If you know how many electrons an atom has what else do you know about this atom?

Generally how many protons it has, therefore what type of atom it is (i.e. carbon, hydrogen etc.)


How many electrons does phosphorus atom have?

phosphorus have 15 electron because you know the atomic number to know electron


How many electrons does an atom potassium havew?

Finding the number of electrons in an atom is easy. You just have to know the atomic number of the element. The atomic number for Potassium is 19. That means Potassium has 19 electrons.


How many electrons in an atom of nitrogen?

An atom of nitrogen has 7 electrons.


How many electrons does an atom of helium have atomic?

An atom of helium has 2 electrons.


How many electrons are in a atom of mecrury?

A Mercury atom has 80 electrons.


How many electrons does a atom have?

The number of electrons depends on what type of atom it is.


How many electrons in a germanium atom?

A germanium atom has 32 electrons.


How do you know how many covalent bonds an atom has?

The number of unpaired electrons in valence shell or numbers of electrons less then 8 in outermost shell of an atom give information about covalent bonds my be formed by an atom.


How do you know the number of elements in an atom?

you see how many electrons and protons it has and add them together


What do you know about the numbers of protons and electrons in an atom?

The number of protons defines what element the atom is, and it also defines how many electrons the atom has in its various orbitals in a normal state.There is one electron per proton in an atom in a normal state.


A potassium atom has how many electrons?

The neutral atom of potassium has 19 electrons.