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Calcium has an atomic number of 20. Thus calcium's number of protons is 20. To balance out these protons' positive charges, calcium also is found with 20 negatively charged electrons.
carbon has : 36000 protons 124000 electrons 348850 calcium
Calcium (element number 20) has 20 protons and 20 electrons.
Calcium has 20 protons, 20 electrons and 20 neutrons in its most commonly found isotope.
Calcium has 20 protons and electrons and a number of neutrons different for each isotope..
Calcium has 20 protons and electrons. The symbol for calcium is Ca and its atomic number is 20.
20 protons and 20 electrons are present in calcium.
A positive two ion of calcium will have 20 protons, 18 neutrons, and 18 electrons. The number of protons and neutrons in a calcium ion remains the same as in a neutral calcium atom (calcium has 20 protons and about 20 neutrons in its nucleus), but it loses two electrons to become positively charged.
Calcium has 20 protons and electrons and a variable number of neutrons, depending on the isotope.
Calcium's atomic number is 20. That means that it has 20 protons. To make it neutral then, an atom of calcium must also have 20 electrons.
Calcium: protons are 20 neutrons are 20, 22, 23, 24, 26 or 28 electrons are 20
Each calcium atom has 20 protons and 20 electrons. This is because the atomic number, which is 20 for calcium, represents the number of protons in the nucleus of its atom, and in a neutral atom, the number of electrons is equal to the number of protons.