Atoms can have as many electron shells as they need.
The first electron shell can only contain 2 electrons but the rest can contain 8.
Electron arrangement patterns down a group : the # of complete electrons shells increases by 1. The # of group is the same as the # of electrons in the outer shell. (ex. Group 2 there will be 2 electrons in the outer shell)
Electron arrangement patterns across a period : the # of complete electron shells stays the same. The # of electrons increases by 1 each time. When a new period starts, that's when a new shell is added.
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The bipositive ion of strontium takes the electron configuration of xenon.
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Divisibility rules help you find the factors of a number. Once you've found the factors for two or more numbers, you can find what they have in common. Take 231 and 321. If you know the divisibility rules, you know that they are both divisible by 3, so 3 is a common factor.
The electron configuration of vanadium in its 3 oxidation state is Ar 3d2.
The electron configuration of a chromium (Cr) 3 ion is Ar 3d3 4s0.
The electron configuration of phosphorus is [Ne]3s2.3p3.
An element with the electron configuration Ne3s^23p^5 is in period 3 of the periodic table. The electron configuration indicates that the element has 3 energy levels, with the last electron being in the 3p subshell.
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Cs does not have a nobel gas electron configuration, as it contains one valence electron in its outermost s orbital. Be3+ also does have a nobel gas electron configuration, as this occurs when Be has a 2+ charge (the typical Be ion is Be2+).
The electron configuration of lithium (Li) is 1s2 2s1, with 3 electrons distributed in the 1s and 2s orbitals. The electron configuration of fluorine (F) is 1s2 2s2 2p5, with 9 electrons distributed in the 1s, 2s, and 2p orbitals.
The trivalent ion with the electron configuration of Kr 4d^3 is the Yttrium (Y^3+) ion. Yttrium differs from krypton (Kr) by losing three electrons to achieve the electron configuration of Kr 4d^3.
Rhodium (Rh) forms a 3 plus ion that has the electron configuration Kr4d6. Rhodium has oxidation states of 2,3 and 4, so it can loan out 2, 3 or 4 electrons depending on the circumstances of a chemical reaction.
Krypton has the same electron configuration as phosphorus in a PCl3 molecule. Both have the electron configuration of [Ne] 3s^2 3p^3.
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VanadiumAtomic number: 23Symbol: VAtomic weight: 50.9415(1)Electron configuration: [Ar]3d34s2Group: 5BPeriod: 4