Question

Укажите, какие формулы изображают молекулы, а какие - радикалы : а) Ch3-Ch2— ; б) Ch3-Ch3- ; в) C3H12; г) C5H11—

Answer 1

А,б,г  -  радикалы
в - молекулы

Answer 2

Радикалы: а, б, г
Молекула: в

Answer 3

Molecular Formulas and Radicals

а) CH3-CH2—: The formula CH3-CH2- represents a molecule. It is the structural formula for ethane, a hydrocarbon with two carbon atoms and six hydrogen atoms. Ethane is a simple alkane and is a molecule composed of covalently bonded atoms.

б) CH3-CH3: The formula CH3-CH3 also represents a molecule. It is the structural formula for ethane, similar to the previous example. Ethane is a molecule composed of two carbon atoms and six hydrogen atoms, bonded together through covalent bonds.

в) C3H12: The formula C3H12 represents a molecule. It is the molecular formula for propane, a hydrocarbon with three carbon atoms and eight hydrogen atoms. Propane is a molecule composed of covalently bonded atoms.

г) C5H11—: The formula C5H11- represents a radical. It is the molecular formula for the pentyl radical, which is a type of alkyl radical. Radicals are chemical species with unpaired electrons and are typically represented with a dot to indicate the unpaired electron. In this case, the pentyl radical has five carbon atoms and eleven hydrogen atoms, and it is a reactive species due to the presence of the unpaired electron.