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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?
Wiki User
∙ 12y ago
Isotopes.
Wiki User
∙ 12y ago
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How many protons neutrons and electrons are in an atom of calcium-42?
Calcium has atomic number 20, which means that all calcium atoms have 20 protons in their atomic nuclei. Neutral calcium atoms also have 20 electrons. Isotopes of calcium vary in the number of neutrons in their atomic nuclei, and are named for their mass number, which is the sum of the protons and neutrons in the nucleus. You can calculate the number of neutrons (N) in an isotope by subtracting the number of protons (atomic number) from the mass number. N = 42 - 20 = 22, therefore, a calcium-42 isotope has 20 protons, 20 electrons, and 22 neutrons.
The total number of calcium atoms in 80.0 grams of calcium is?
The total number of calcium atoms in 80,0 grams of calcium is 12,044 280.10e23.
How many atoms are in 131 grams of calcium?
There are 3.275 moles of calcium in 131 grams as relative atomic mass of calcium is 40. Therefore there are 1.972 x 1024 atoms.
How many atoms do Ca have?
There are 20 protons in a calcium atom. You can find the number of atoms in any element by looking at the atomic number which is in the top right corner of the element's box on the periodic table. e.g. Ca 20 40.078
What is the mass in milligrams of 4.11x1019 calcium atoms?
HI!So, as there are 6.02x1023 atoms in a mole, and you have 4.11x1019 calcium atoms, that's4.11x1019 /6.02x1023, which gives you 0.000068272 moles of calcium. Calcium has a Relative Atomic Mass (a.k.a. Mass Number) of ~40.RAM x number of moles = Mass (grams)Therefore 40 x0.000068272 = 0.00273088 gramsAs there are 1000milligrams in 1 gram, that's0.00273088 grams x 1000, which is 2.73088mg.I hope this helps!
What is calcium carbonates atomic number?
It is a compound. Only atoms have atomic number. Elements have their own atomic number.
What does atoms of every isotope of calcium have the same?
2) Atomic Number
How many atoms are in 127 g of calcium?
The gram atomic mass of calcium is 40.08. Therefore, 127 g of calcium constitutes 127/40.08 or 3.69 gram atomic masses. By definition of Avogadro's Number, each gram atomic mass contains Avogadro's Number of atoms. Therefore, the answer is 3.69 X Avogadro's Number or 1.91 X 1024 atoms, to the justified number of significant digits.
What element's neutral atoms have 20 protons?
it is about the atomic number. Calcium is the element.
How many atoms are in one gram of calcium?
To work this out you need to know the atomic weight of calcium and Avogadros number, which is the number of atoms in a gram atom. Calcium has an atomic weight of 40.078. Therefore a gram ato is 40.078 grams which contains 6.02214129(27)×1023 atoms. 1g of calcium contains 6.02214129(27)×1023 / 40.078 1.502 X 1022
What is used to describe the number of atoms in a copper penny?
atomic power to he power4
The atomic number of neon is 10 the atomic number of calcium is 20 compared with a mole of neon a mole of calicum contains?
the same number of atoms, 6.022 x 1023.
What is metal with 20 electrons?
The metallic element whose atoms contain 20 electrons each is calcium, with atomic number 20. (The number of electrons in a neutral atom always matches the number of protons, which is the definition of atomic number.)
How many protons neutrons and electrons are in an atom of calcium-42?
Calcium has atomic number 20, which means that all calcium atoms have 20 protons in their atomic nuclei. Neutral calcium atoms also have 20 electrons. Isotopes of calcium vary in the number of neutrons in their atomic nuclei, and are named for their mass number, which is the sum of the protons and neutrons in the nucleus. You can calculate the number of neutrons (N) in an isotope by subtracting the number of protons (atomic number) from the mass number. N = 42 - 20 = 22, therefore, a calcium-42 isotope has 20 protons, 20 electrons, and 22 neutrons.
The total number of calcium atoms in 80.0 grams of calcium is?
The total number of calcium atoms in 80,0 grams of calcium is 12,044 280.10e23.
Form a atomic number of 15 atoms?
Atomic number is the number of protons in an atom, not the number of atoms. The element with the atomic number 15 is phosphorus.
An atoms atomic number is the number of what in its nucleus?
atomic number
