Element Electron Arrangements
What will be the likely charges of elements with an electron arrangement of 2,8,8,2 and an element with an electron arrangement of 2,8,18,7 when they form ions?
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a) The first atom would be calcium. It has 20 electrons. If you look on the periodic table you will see that atomic number 20 coresponds to calcium. The electron configuration is (1s^2)(2s^2)(2p^6)(3s^2)(3p^6)(4s^2)
The electron "shell" that loses the electrons is the ...
Solution Summary
Solution identifies what each element is and explains the element's electron configuration and the likely charge(s) when that element forms an ion.
Patterns in the Electronic Configurations of the Elements
Describe the patterns in the electronic configurations of the elements.
Each row across the periodic table is called a period and the elements gradually change properties from left to right. Can you explain this in terms of the electronic configurations?
Each column of the periodic table is called a family. Elements in the same family have similar properties. Are there any similarities in the electronic configuration within a family (column)?
Would you expect the size of the atoms to increase, decrease, or stay the same from the top of the column (family) to the bottom of the same column (same family)? Explain.
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