Question

2. Укажіть правильне твердження: А органічні сполуки не можна добути з неорганічнихБ валентність атома Карбону в молекулі С2Н6 дорівнює ІІІВ не може бути речовин з однаковою формулою, але різною будовоюГ для Карбону в органічних сполуках характерна валентність, що дорівнює ​

Answer 1

Ответ:

В - возможно существование соединений с одинаковой формулой, но разным строением,  Г- валентность углерода равна IV или II

Объяснение:

Answer 2

I will answer in detail. 2. Indicate the correct statement:

A organic compounds cannot be obtained from inorganic ones B the valency of the carbon atom in the molecule C2H6 is III C there cannot be substances with the same formula, but different structure D for carbon in organic compounds, the valency that is equal to IV is characteristic

The correct statement is D. For carbon in organic compounds, the valency that is equal to IV is characteristic. This means that carbon can form four covalent bonds with other atoms in organic molecules. For example, in methane (CH4), carbon forms four single bonds with four hydrogen atoms.

The statements A, B and C are incorrect. Organic compounds can be obtained from inorganic ones by various chemical reactions. For example, urea (NH2CONH2) was the first organic compound to be synthesized from inorganic materials by Friedrich Wöhler in 1828. The valency of the carbon atom in the molecule C2H6 is IV, not III. This is because carbon has four valence electrons and can share them with other atoms to form four covalent bonds. For example, in ethane (C2H6), each carbon atom forms three single bonds with three hydrogen atoms and one single bond with another carbon atom. There can be substances with the same formula, but different structure. This phenomenon is called isomerism. Isomers are compounds that have the same molecular formula, but different structural formula. For example, butane (C4H10) and isobutane (C4H10) are isomers. They have the same molecular formula, but different arrangements of atoms in their molecules.