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the atomic number of Ca or calcium is 20. That gives it an electron arangement of 2,8,8,2, It has 20 protons and 20 electrons with a full valence electron shell.

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15y ago
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5mo ago

The atomic number for Calcium (Ca) is 20.

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Q: What is the atomic number for Ca?
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Related questions

What is the symbol and atomic number element for calcuim?

The symbol for calcium is Ca and its atomic number is 20.


What atomic number of f plus the atomic number of Na equals the atomic number of what element?

The atomic number of F (fluorine) is 9, Na (sodium) is 11. When you add them together, you get 20. The element with atomic number 20 is calcium (Ca).


What element has atomic number of ca?

CACIUM


If the atomic number of Element D is 20 then what is the atomic number of R?

If the atomic number of Element D is 20, then Element D is calcium (Ca). The atomic number of calcium is 20, so R would also have an atomic number of 20. This means that R would also be calcium (Ca).


What element with atomic number 20?

Calcium (Ca)


What is the atomic number of 20 element?

Calcium (Ca)


Mass number of Ca?

Calcium: ~Atomic weight: 40.078 ~Atomic #: 20 ~Density: 1.55 ~Alkali Earth Metal


What is the symbol for Calcium in the Periodic Table?

The symbol for Calcium in the Periodic Table is Ca.


What is the atomic number of calcium?

The atomic number of calcium (Ca) is 20.The atomic weight of Ca is 40.078 grams per mole.See the Web Links and the Related Questions to the left of this answer for a periodic table and more information about this element.20


What is the atomic number of f plus the atomic number of Na equals the atomic number of this element?

The atomic number of F (fluorine) is 9 and the atomic number of Na (sodium) is 11. Adding them together gives 20, which is the atomic number of calcium (Ca).


What is the atomic number for kalium?

The atomic number of kalium (syn.: potassium) - symbol K - is 19. If you think to calcium (symbol Ca) the atomic number is 20.


What is the mass number of Ca?

97% of the naturally occurring Calcium is isotope Ca-40, so massnumber 40. Other isotopes have massnumber 42 to 48