carbon has :
36000 protons
124000 electrons
348850 calcium
A neutral carbon atom has 6 protons and 6 electrons.
Calcium (element number 20) has 20 protons and 20 electrons.
20 protons and 20 electrons are present in calcium.
Calcium has 20 protons and electrons and a number of neutrons different for each isotope..
Calcium has 20 protons and electrons and a variable number of neutrons, depending on the isotope.
6 electrons, protons, and neutrons.
6 protons, 6 electrons and 6 protons in carbon-12 atom
20
20 protons, 20 electrons, and usually 20 neutrons
Carbon has 6 protons. In a neutral atom, the number of protons is equal to the number of electrons, which is why carbon, with 6 electrons, also has 6 protons. This is what defines it as the element carbon on the periodic table.
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'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.