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The amount of electrons is the same as the atomic number. If you want to find valence electrons, it would be the number in the ones place for elements in group 1,2, and 13-17. For example, oxygen is in group 16 and it has 6 valence electrons.
Hi! I agree with the above statements. If you want to find the number of total electrons of the element, you look at the atomic number. And if you want to find the number of valence electrons, you would look at the number of electrons in the s and p orbitals for rows 1-3.
Like the statements above, the number of electrons for an element is equivalent to its atomic number. To find the number of valence electrons, however, you would need to count the number of electrons in an elements' outermost shell. For example, in Magnesium, the number of electrons is = to its atomic number - 12. The number of valence electrons is 2, because that's how many there are in its outermost shell.
The number of total electrons for a ground state element should be equal to its atomic number. The number of valence electrons can be found by counting the element's position in a period. For example, oxygen is the sixth element in the second period so it has 6 valence electrons (2 in the 2s state and 4 in the 2p state).
The number of an electrons in an atom is equal to its atomic number. For example, Oxygen has an atomic number of 8, so it has 8 electrons. However, a cation will have less electrons (positive charge) and an anion will have more electrons (negative charge).
To find the number of electrons in an atom just look at its atomic number:) because the number of protons in an atom matches the number of electrons. To find the number of valence electrons in an atom just count across the period on the period table!
You count the number of electrons an element has by its atomic number. The number of electrons an element has changes when it is a cation or an anion. To find the electron numbers of those you just add or subtract from the atomic number based on if electrons were added or removed.
The number of electrons is equal to the number of protons of each element! An atom with a neutral charge is one where the number of electrons is equal to the atomic number. Ions, however, are atoms with extra electrons or missing electrons.
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