There are 5 possible structural isomers with the molecular formula C₇H₉N.
Explanation:
You may find the chemical diagrams of the structural isomers in the attached picture.
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structural isomers
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Answer: Elements in the same column are similar in their properties
Explanation: The columns on the periodic table are also know as group of the periodic table elements in the same group of the periodic table tends to have similar chemical properties because they all have the same number of valence electrons in their outermost shell. This plays an important roles in their reactivity and properties
Answer:7 atom of carbon+5atom of hydrogen +3atom of nitrogen +6 atom of oxygen =21
