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?

Question

Elaina Harper

Chemistry

11 March, 12:27

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?

+4

Answers (2)

Know the Answer?

Lillian Salazar · Answer 1

See below.

Explanation:

They both have 1 valency electron so will be metallic and in the same Group (Group 1) of the Periodic Table, so will have similar properties.

Tatum Mercado · Answer 2

This question is incomplete

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 7 X has three electron shells while Y has two electron shells X 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 shell They react with halogens in group 7 to form salts They dissolve in water to form alkaline