how many electrons can be on the outer shell?
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Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.
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So we get 2 + 5 = 7. So fluorine has 7 electrons in the outermost shell.
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Noble gases have eight electrons in their outermost shell, except in the case of helium, which has two.
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The shell closest to the nucleus, 1n, can hold two electrons, while the next shell, 2n, can hold eight, and the third shell, 3n, can hold up to eighteen. The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms.
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The number of valence electrons are equal to the number of electrons in the outermost shell of the atom. The atomic number of sulphur is 16, and therefore the sulphur atom has 16 electrons in its orbits. The first shell can have a maximum of 2 electrons, and the second shell a maximum of 8 electrons.
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Each orbital can hold 2 electrons (one of each spin), and a maximum of 7 f orbitals can have the same energy without violating Pauli's exclusion principle. The number of electrons in a 4f subshell can be anything between 0 (if it isn't filled) and 14 (2 electrons per orbital times 7 orbitals = 14 electrons).
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Electronic configuration includes - 2,8,8,1. According to the octet rule, the atom or ion to be stable has to have 8 electons in the outermost shell.
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The atoms of the noble gases have full outer shells of electrons. Helium atoms have two electrons in their outer shell. The atoms of the other noble gases have eight electrons in their outer shells.
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The maximum number of electrons that can be contained in the n=3 level is 18. This electron shell has enough energy to contain three sublevels: s, p...
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The innermost shell has a maximum of two electrons but the next two electron shells can each have a maximum of eight electrons.
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Valence electrons are the number of electrons present in the outermost shell of an atom. The last shell of a chlorine atom has 7 electrons in it. Therefore, there are 7 valence electrons in an chlorine atom.
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Most of the elements important in biology need eight electrons in their outermost shell in order to be stable, and this rule of thumb is known as the octet rule.
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Every element in the first column (group one) has one electron in its outer shell. Every element in the second column (group two) has two electrons in the outer shell. As you keep counting the columns, you'll know how many electrons are in the outer shell.
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That means there are 16 electrons in a sulfur atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and six in shell three. There are 6 electrons in the outer orbit of an atom of sulphur.
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If Hydrogen has 1 electron it can only have 1 outer shell (or orbital) as an electron cannot by split across shells. In general, the first shell can hold 2 electrons, the second can hold 8. Consequently, hydrogen only has 1 outer shell as it has less than 2 electrons so it does not need another shell.
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The Group 7 elements - fluorine (F), chlorine (Cl), bromine (Br), iodine (I) and astatine (At) - have seven electrons in the outer shell.
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So we get 2 + 5 = 7. So fluorine has 7 electrons in the outermost shell. Basically, count the number of electrons in the orbitals with the highest principle quantum number, and that'll give the number of electrons in the outermost shell.