The electron configuration of an element is 1s^2 2s^2 2p^6. Describe what most likely happens when an atom of this element comes near an atom having seven valence electrons

Answer & Explanation:

Using the numbers in the configuration 1s² 2s² 2p^6 3s^1, we can find out it has 11 electrons (by adding 2,2,6,1), meaning the element is sodium (Na). Sodium is in the outermost column of the periodic table, meaning it has one valence electron, making it highly reactive because it can very easily give one electron in a reaction. Atoms will prefer to have a full eight valence electrons, meaning an atom with seven valence electrons is also incredibly reactive since it only needs to gain one more in a reaction to gain eight. If sodium, an element with one valence electron, reacts with an element with seven (i.e chlorine), they both will be very quick to chemically bond to form a full valence shell. 

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ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.