Ca (2+) I think because since there are two less electrons then the charge would become positive.
Calcium has 20 electrons and protons; the number of neutrons is specific for each isotope. Number of neutrons in a calcium atom = Mass number - 20
1) it's spelt Calcium and 2) 20 protons, 20 electrons, 20 neutrons
20 protons, 18 electron's, and 20 neutrons
Carbon Dioxide has the formula of CO2, which means 1 Carbon atom and 2 Oxygen atom per CO2 molecule. Carbon12 has 6 protons, 6 neutrons and 6 electrons per atom. Oxygen has 8 protons, 8 neutrons and 8 electrons per atom. One CO2 molecule contains 22 protons, 22 neutrons and 22 electrons. Calcium Nitrate has the formula of Ca(NO3)2. Calcium contains 20 of each. Nitrogen contains 7 of each. Oxygen contains 8 of each. Per molecule there are 1 calcium, 2 Nitrogen and 6 oxygen. Therefore: 20 + (2x7) + (6x8) = 20 + 14 + 48 = 72 protons, 72 Neutrons and 72 electrons. I hope that answers your question.
The atomic number of calcium is 20 and relative atomic mass (nucleon number) 40.1. The nucleon number is a decimal because it is an average value having taking all the different isotopes into consideration, based on their relative abundance. So all calcium atoms have 20 protons and 20 electrons. The number of neutrons will depend on what isotope of calcium we are talking about; calcium has 24 isotopes. If we consider the isotope calcium-40, which is the most abundant of all at about 97%, the can determine its number of neutrons as 40 - 20 = 20. So a calcium-40 isotope has 20 neutrons.
calcium has 20 neutrons and electrons
it depends on the isotopes of calcium e.g. Calcium-40 has 20 electrons and 20 neutrons Calcium-44 has 20 electrons and 24 neutrons To find out the number of neutrons for Calcium you take the Isotope number (x) minus away the number of electrons (20) e.g. Calcium-x Calcium-x has 20 electrons and (x-20) neutrons.. OR you take the relative atomic mass (x) and subtract it with the number of electrons (20) (x-20) = neutrons
Calcium has 2 valence electrons
Calcium has 20 protons and electrons and a variable number of neutrons, depending on the isotope.
Um, the element calcium? Protons, neutrons, electrons..
Calcium is an element, which means that it is made up protons/electrons and neutrons. Each calcium atom contains a total of 20 protons/electrons, and 20 neutrons.
Calcium has 20 protons, 20 electrons and 20 neutrons in its most commonly found isotope.
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.)
Calcium has twenty protons and twenty electrons. The main isotope of calcium also has twenty neutrons.
20
Electrons have no relevant mass, and protons and neutrons both have the mass of 1u. If Calcium has the number 20, it has 20 protons (and electrons). It's mass is about 40u. Core Mass - Protons = Neutrons 40u - 20u = 20u, this means Calcium has 20 electrons, 20 protons and 20 neutrons.
Calcium has 20 electrons and protons; the number of neutrons is specific for each isotope. Number of neutrons in a calcium atom = Mass number - 20