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How many protons does an atom have with a mass number of 43 and 21 electrons?
Wiki User
∙ 12y ago
The atomic no. in this case 22, is equal to the no of protons and also electrons. So it has 22 protons and 22 electrons. The mass no. is equal to the no. of protons plus the no. of neutrons. So it has 22 protons and 26 neutrons. The metal with atomic no. 22 on the Periodic Table is titanium.
Wiki User
∙ 17y ago
Wiki User
∙ 14y agoAn atom has protons and neutrons in its nucleus, and electrons in the shells. (outside the nucleus) An atom whose atomic number is 12, has 12 protons, that is why it is number 12. The mass number, 25, means it has 12 protons and 13 neutrons in the nucleus. Protons have a +1 charge and electrons have a -1 charge. To be stable the atom must have 12 protons and 12 electrons. The mass number has nothing todo with thenumber of electrons.
Wiki User
∙ 14y agoIf your atom is a neutral atom, which I am assuming it is; the protons and the electrons would be the same. So, if you have 48 electrons, you will also have 48 protons.
Unruly Queen
Wiki User
∙ 9y agoAssuming that this atom with 12 protons is not ionic in nature, it would have 10 neutrons and 12 electrons. This atom is an isotope of magnesium, as magnesium normally has 12 neutrons.
Wiki User
∙ 12y ago24 because to find the number of neutrons you subtract the atomic number from the mass number. 45-21=24.
Wiki User
∙ 15y ago12 electrons
Wiki User
∙ 6y agoThe number of electrons is 18.
Wiki User
∙ 15y agoCadmium
Unruly Queen
4
Wiki User
∙ 11y ago2
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How many electrons do atoms need to be neutral?
It depends entirely on what type of atom it is. (Neutral atom is redundant. A "non-neutral" atom is referred to as an ion) If it is an atom of carbon, for example, there are 6 electrons. Silicon, on the other hand, has 14 electrons.
How many electrons does each neutral chromium atom have?
24 electrons, remember the atomic number of an element tells you how many protons it has. The number of protons = the number of electrons (if the atom isnt charged)
If an atom has 49 protons how many electrons does it have?
A neutral atom with 49 electrons will have 49 protons. The number of protons and electrons are always the same in a neutral atom. If the number of protons is not matched by the number of electrons, then the atom is charged and is called an ion. Further, if protons outnumber electrons, the atom is positively charged and is a positive ion. For situations where electrons outnumber protons, the opposite is true. The element with 49 protons in it is indium, by the way.
How many electrons orbit the nucleus if the atom has no charge?
If the atom has no charge, then the number of electrons is the same as the number of protons (atomic number).
An element has an atomic number of 30 how many protons and electrons are in a neutral atom of the element?
It will have 30 protons and 30 electrons if the atom is neutral.
How many electrons versus protons in an atom?
The number of electrons should = the number of protons.
How many electrons has an atom?
An atom has the same number of electrons as it does protons, and the number of protons determines what element it is.
When an atom has seven protons how many electrons does it have?
Generally an atom has the same number of protons and electrons. Nitrogen has seven protons.
What is the number of protons and electrons of berrylium?
The atomic number of beryllium is 4. The atomic number of an atom says how many protons are in that atom. In an unionized atom, the protons and electrons are the same amount. Beryllium (unionized) has 4 electrons and 4 protons.
How many electrons do atoms need to be neutral?
It depends entirely on what type of atom it is. (Neutral atom is redundant. A "non-neutral" atom is referred to as an ion) If it is an atom of carbon, for example, there are 6 electrons. Silicon, on the other hand, has 14 electrons.
An atom has what number of protons and electrons?
9 protons and 10 neutrons in F-19 isotope.
How electrons does a helium atom have?
2 electrons. The atomic number is the number of protons and however many protons there are, that is also the number of electrons.
How many electrons does each neutral chromium atom have?
24 electrons, remember the atomic number of an element tells you how many protons it has. The number of protons = the number of electrons (if the atom isnt charged)
If an atom has 49 protons how many electrons does it have?
A neutral atom with 49 electrons will have 49 protons. The number of protons and electrons are always the same in a neutral atom. If the number of protons is not matched by the number of electrons, then the atom is charged and is called an ion. Further, if protons outnumber electrons, the atom is positively charged and is a positive ion. For situations where electrons outnumber protons, the opposite is true. The element with 49 protons in it is indium, by the way.
How many protons electrons does it have?
A "atom" which by definition is electrically neutral, has the same number of electrons as it has protons.
Do protons have electrons?
Not necessarily, the number of protons in an atom are exactly the same as the electrons in an atom. For example, sodium has 11 protons and 12 neutrons. How many electrons does it have? 11.
How many electrons are in the mass number of 111 and protons of 50?
There are 50 electrons. In a neutral atom, the number of electrons equals the number of protons.
