the periodic table of elements has predictable trends: one trend is in atomic structure. Review the elements in the periodic table. Describe the trend in atomic number. Begin with hydrogen and move through the table. How is this trend evidenced in the stricture of the atoms of each element?

where's the diagram?

answer: option (a) is the correct answer.

explanation:

the measurement of hydrogen ions in a solution is known as ph.

if ph of a solution is less than 7 then the solution is acidic. if ph of a solution is greater than 7 then the solution is basic.

when the ph of a solution equals 7, then the solution is considered as neutral.

the ph of pure water is 7, therefore, it means that concentration of hydronium ions equals that of hydroxide ions.