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Use the symbols of the elements described in the following clues to fill in the blanks that spell out the name of a famous American scientist. Although this scientist was better known as a physicist than as a chemist, the Philadelphia institute that bears his name does include a biochemistry research facility. (1) The oxide of this alkaline earth metal is amphoteric. (2) The element that makes up approximately 3.0% by mass of the human body. (3) The element having a 7 s 1 valence electron configuration. ( 4) This element is the alkali metal with the least negative standard reduction potential. Write its symbol in reverse order. (5) The alkali metal whose ion is more concentrated in intracellular fluids as compared with blood plasma. (6) This is the only alkali metal that reacts directly with nitrogen to make a binary compound with formula M 3 N. (7) This element is the first in Group 3A (13) for which the +1 oxidation state is exhibited in stable compounds. Use only the second letter of its symbol.
Chemistry: An Atoms First Approach
Solutions
Chemistry: An Atoms First Approach
Use the symbols of the elements described in the following clues to fill in the blanks that spell out the name of a famous American scientist. Although this scientist was better known as a physicist than as a chemist, the Philadelphia institute that bears his name does include a biochemistry research facility.
(1) The oxide of this alkaline earth metal is amphoteric.
(2) The element that makes up approximately 3.0% by mass of the human body.
(3) The element having a 7s1 valence electron configuration.
(4) This element is the alkali metal with the least negative standard reduction potential. Write its symbol in reverse order.
(5) The alkali metal whose ion is more concentrated in intracellular fluids as compared with blood plasma.
(6) This is the only alkali metal that reacts directly with nitrogen to make a binary compound with formula M3N.
(7) This element is the first in Group 3A (13) for which the +1 oxidation state is exhibited in stable compounds. Use only the second letter of its symbol.
Interpretation: The given blanks are to be filled by the symbols of the elements that describe the given clues.
Concept introduction: Beryllium reacts with both acid and base, hence it is amphoteric. The alkali metal whose ion is more concentrated in intracellular fluids as compared to blood plasma is potassium.
To determine: The symbols of the elements that describe the given clue.
Explanation of Solution
Explanation
The alkaline earth metal that has amphoteric oxide is beryllium. Its symbol is
It reacts with both acid and base, hence it is amphoteric. Its reaction with hydrochloric acid forms beryllium chloride as shown below,
Its reaction with base sodium hydroxide is,
The element that makes up approximately
The general electronic configuration of alkali metal is
The alkali metal with the least negative standard electrode potential is sodium. Its symbol is
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