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What is the atomic number of calcium and what does that number tell you about an atom of calcium?
The atomic number of calcium is 20. The atomic number tells you the number of protons in the nucleus of a calcium atom, which also corresponds to the number of electrons in a neutral calcium atom.
The atomic number for the element calcium is 20 how many protons and electrons does each calcium atom have?
Each calcium atom has 20 protons and 20 electrons. This is because the atomic number, which is 20 for calcium, represents the number of protons in the nucleus of its atom, and in a neutral atom, the number of electrons is equal to the number of protons.
Which element has an atom with 20 electrons?
Calcium is the element that has the atomic number 20.
How many protons and electrons does a calcium atom have?
Calcium has 20 protons, 20 electrons and 20 neutrons in its most commonly found isotope.
How many protons and electrons does the element calcium have if the atomic number is 20?
Well, first, I feel I should point out that if the atomic number is not 20, then it's not calcium.A neutral atom of calcium has 20 protons and 20 electrons.
How many protons and electrons are in an atom in calcium?
Calcium's atomic number is 20. That means that it has 20 protons. To make it neutral then, an atom of calcium must also have 20 electrons.
How many electrons do calcium has?
Calcium, as an element, has 20 electrons. But when becomes an ion, it loses two electrons, becoming Ca+2. Therefore, as an ion, calcium has only 18 electrons.18
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.
Calcium's atomic number is 20. What does that that tell us about a calcium atom?
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How many electrons does an atom with an atomic number of 20 have?
An atom with an atomic number of 20 has 20 electrons. The number of electrons in an atom is equal to its atomic number.
State the number of valence electrons in an atom of calcium?
A calcium atom has two valence electrons.
