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Calcium is a metal element. Atomic Mass of it is 40.

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The Atomic and mass number for calcium?

Calcium is a metal element. Atomic mass of it is 40.


How many protons are in an isotope of calcium with a mass number of 42?

A calcium isotope with a mass number of 42 would have 20 protons since calcium always has 20 protons. The mass number includes both protons and neutrons, so subtracting the number of neutrons (mass number - number of protons) gives the number of protons.


What is the mass number of calcium-41?

Calcium is a metal element. Atomic mass of it is 40.


Does calcium have different mass number's?

no


Which element has a mass number of 40 and only has 2 valance electrons?

The element that has a mass number of and two valence electrons is an isotope of calcium.


Why is there so much mass in calcium?

Calcium has a large number of Neutrons.


Most calcium atoms have an atomic number of 20 and a mass number of 40 but some calcium atoms have a mass number of 48 What word could you use to describe these two kinds of calcium atoms?

Isotopes. Calcium atoms with a mass number of 40 represent the most common isotope, while those with a mass number of 48 are a less common, but still natural, isotopic form of calcium.


What is the formula to find the mass number of calcium?

The mass number of an element like calcium is the sum of the number of protons and neutrons in its nucleus. Calcium has 20 protons, so to find the mass number, you would look up the number of neutrons in the periodic table and add that to 20.


How many atoms are in 159g of calcium?

To find the number of atoms in 159g of calcium, you need to first calculate the number of moles of calcium present using the molar mass of calcium. The molar mass of calcium is approximately 40 g/mol. Then, you can use Avogadro's number (6.022 x 10^23 atoms/mol) to convert moles of calcium to atoms. Calculate the number of moles of calcium in 159g using the formula: moles = mass (g) / molar mass (g/mol). Finally, multiply the number of moles by Avogadro's number to determine the number of atoms in 159g of calcium.


How many moles of calcium are in a sample of 40g?

Since the gram atomic mass of calcium is 40.08 and calcium does not form polyatomic molecules, the number of moles in 40g of calcium is 1.0, to the justified number of significant digits.


What is the identity of the element that has an atomic mass of 40.078 amu?

The element with an atomic mass of 40.078 amu is calcium. Calcium has an atomic number of 20.


The mass number of an atom of calcium with twenty protons and twenty neutrons?

The mass number of an atom of calcium with twenty protons and twenty neutrons is 40. This is because the mass number is the sum of the protons and neutrons in the nucleus of an atom.