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a neutral atom in the ground state has the electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^2

a. state the group and period this element is found on the periodic table.

b. identify this element.

c. classify this element as a metal, nonmetal or metalloid

d. list two other elements likely to have properties similar to this element.

e. how many valence electrons does this element have?

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Based on the equation and the information in the table, what is the enthalpy of the reaction?

An observation that requires measurement is called quantitative observable or qualitative