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If you locate Argon (Ar) on the Periodic Table, you will see that it has an atomic weight 39.95 which is rounded up to 40 (hence Ar-40.) The number, 18, located at the top of Argon is it's atomic number which is a fancy way of saying "number of protons."
The atomic weight we were just talking about is the sum of the protons+neutrons. Since we are given the atomic weight and the atomic number (remember "number of protons"):
Atomic weight + Atomic number = Number of neutrons
39.95 18 22
Finding the number of electrons is the simplest part. In any atom (assuming that the atom's charge is balanced,) the number of electrons equals the number of protons. You will in most cases be assuming that the # of electrons equal the # of protons. Don't scare yourself and make it harder than it seems
Wiki User
∙ 13y ago
Wiki User
∙ 13y ago40Ca, like every other isotope of calcium, has 20 protons.
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How many protons does calcium chlorine have?
Calcium has 20 protons and Chlorine has 17, so 20+17= 37 protons.
How many protons and electrons does a calcium atom have?
Calcium has 20 protons, 20 electrons and 20 neutrons in its most commonly found isotope.
How many protons and electrons does each calcium have?
Calcium (element number 20) has 20 protons and 20 electrons.
What is the protons of element calcium?
An atom's atomic number tells us how many protons it has. If we reference a periodic table, we see that calcium's atomic number is 20. Thus, calcium has 20 protons.
How many protons are in an isotope of calcium with a mass number of 42?
The number of protons in one atom of any isotope of calcium is 20, which is the atomic number of calcium.
How many protons are in the nucleus in calcium?
40
How many protons does Calcium-40 have?
20
How many neutrons does calcium-40 have?
Number of neutrons = mass number - atomic number = 40 - 20 = 20 neutrons
How many protons (p) neutrons (n) and electrons (e) are in an atom of calcium?
There are 20 p , n , e- in an atom of calcium. Its atomic number is also 20.
The mass number of an atom of calcium with 20 protons and 20 neutrons is?
40, the sum of the protons and neutrons.
How many protons does have calcium?
Calcium has 20 Protons. You can determine the amount of Protons in an Element by checking the top number of an element. This is called the Atomic number. Calcium has 20 protons
How many protons does calcium chlorine have?
Calcium has 20 protons and Chlorine has 17, so 20+17= 37 protons.
What is the element that has 20 neutrons?
Several can. Perhaps you meant to ask which has 20 protons, in which case the answer is calcium. (Calcium is also one of the elements that can have 20 neutrons, but it's not the only one.)
How many protons and electrons does a calcium atom have?
Calcium has 20 protons, 20 electrons and 20 neutrons in its most commonly found isotope.
How many protons electrons and calcium does carbon have?
carbon has : 36000 protons 124000 electrons 348850 calcium
How many protons are there in Calcium?
20.
How many protons and electrons does each calcium have?
Calcium (element number 20) has 20 protons and 20 electrons.
