20 protons and 18 electrons
A positive calcium ion (Ca^2+) has 20 protons, 18 electrons, and 20 neutrons. This is because the atomic number of calcium is 20, indicating 20 protons in a neutral atom, and losing 2 electrons makes it positively charged while the number of protons and neutrons remains the same.
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.
There are 20 p , n , e- in an atom of calcium. Its atomic number is also 20.
A calcium atom typically has 20 protons, 20 electrons, and approximately 20 neutrons.
They are neutrons, protons and electrons. The neutrons have zero charge, protons have a positive charge and electrons have a negative charge.They are neutrons, protons and electrons. The neutrons have zero charge, protons have a positive charge and electrons have a negative charge.
A positive calcium ion (Ca^2+) has 20 protons, 18 electrons, and 20 neutrons. This is because the atomic number of calcium is 20, indicating 20 protons in a neutral atom, and losing 2 electrons makes it positively charged while the number of protons and neutrons remains the same.
Protons have a positive charge, electrons have a negative charge, and neutrons are neutral and have no charge.
Calcium has 20 protons and electrons and a variable number of neutrons, depending on the isotope.
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
20 p+ 20 n
Protons and electrons both have a positive or negative charge, but neutrons have no charge.
(a) a sodium atom with 11 protons, 11 electrons, and 12 neutrons (b) a calcium atom with 20 protons, 18 electrons, and 20 neutrons (c) a helium atom with 2 protons, 2 electrons, and 2 neutrons (d) an iron atom with 26 protons, 26 electrons, and 30 neutrons
protons are positive
Um, the element calcium? Protons, neutrons, electrons..
No. Protons are positive and neutrons are neutral. Electrons are negative.
Protons- positive neutrons- none electrons-negative