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The periodic chart can tell us several things. The number of protons of an element, the number of electrons in an uncharged element and, by calculation, the number of neutrons. The number of electrons an atom has can be variable. We can have either positively charged atoms (the electrons and protons are not equal and do not cancel, in this case there is one less electron) or negatively charged (one more electron than proton.) The number of protons, though, is not variable. This is what defines what element we have. Calcium has 20 protons. Always. That's how we know that it's calcium. The number of neutrons is also variable and can be calculated as the Atomic Mass minus the mass of the protons (the electrons contribute significantly less to the total mass and are typically disregarded.)
What else can I help you with?
What is the proton number also called?
The proton number is the atomic number.
What is the formula for the atomic number?
atomic number = number of proton in an element number of proton = number of electron mass number = number of proton + number of neutron therefore... atomic number = mass number - number of neutrons
What is the atomic structure of Ca 2 plus?
40 Ca2+ Mass number is 40 Atomic number (proton number) is 20 therefore 18 electrons as calcium has lost 2 electrons to become a Ca2+ ions :D
What is the atomic number of calcium and what does that number tell you about an atom of calcium?
The atomic number of calcium is 20. The atomic number tells you the number of protons in the nucleus of a calcium atom, which also corresponds to the number of electrons in a neutral calcium atom.
What type of particle has an atomic number of 1 and a mass number of 1?
Of the common sub-atomic particles, both the proton and the neutron have mass numbers of 1.
How much proton calcium have?
20 protons in calcium
The element with a proton number 12 has similar chemical properties to the element with the proton number?
It has similar properties to the element with proton number 20, which is calcium.
If the atomic number for the element calcium is 20 than how many protons end electrons does each calcium atom have?
One atom of calcium has 20 protons and 20 electrons.There is 1 electron per proton in each atom of an element.By there being one proton for every electron, the overall atom stays neutral because a proton carries a positive charge and an electron carries a negative charge, and the two cancel each other out. Ions, on the other hand, are charged atoms or molecules, but we don't need to get into that because your question is dealing with an element.
What is the proton number also called?
The proton number is the atomic number.
What is the formula for the atomic number?
atomic number = number of proton in an element number of proton = number of electron mass number = number of proton + number of neutron therefore... atomic number = mass number - number of neutrons
What is the atomic structure of Ca 2 plus?
40 Ca2+ Mass number is 40 Atomic number (proton number) is 20 therefore 18 electrons as calcium has lost 2 electrons to become a Ca2+ ions :D
What is the proton number of iron?
iron has 26 protons
What is the atomic number to a proton?
We don't use a atomic number for a proton. But atomic number is the number of protons an atom contains.
How do you calculate avogadro's number?
1 / mass of a proton = avogadro's number 1 / mass of a proton = avogadro's number
What is the atomic number for calcium?
The most common calcium isotope, calcium-40, has 20 neutrons.
Hydrogen number of protons?
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What is the atomic number of calcium and what does that number tell you about an atom of calcium?
The atomic number of calcium is 20. The atomic number tells you the number of protons in the nucleus of a calcium atom, which also corresponds to the number of electrons in a neutral calcium atom.
