The electron configurations of two unknown elements x and y are shown . x: 1s^ 2 2s^ 2 2p^ 6 3s^ 1 y: 1s^ 2 2s^ 1 which statement is most likely correct about the two elements ?

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Explanation:

X has an atomic number of 11 and hence it's sodium (Na) while Y has an atomic number of 3 and hence it is Lithium (Li).The atomic mass of X is 23 while that of Y is 7X has three electron shells while Y has two electron shellsX and Y cannot form a compound as there ions are both positively charged (cations). However, there ions both have a charge of +1; hence are univalent positive metals. They are both metals and are found in group 1 of the periodic table The are highly reactive metals because they have just one electron in there outermost shellThey react with halogens in group 7 to form saltsThey dissolve in water to form alkaline

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