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P-1 Carbon Compounds — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceP-1 Carbon Compounds5 Marks
Question
How is the methane molecule formed?
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Answer

(1) The electronic configuration of carbon is (2, 4). Carbon has four electrons in the outermost shell, hence it is tetravalent.
(2) The electronic configuration of hydrogen is 1, hence it is monovalent.
(3) Carbon needs four electrons to complete the L shell and attain the configuration of neon (Ne).
(4) Four atoms of hydrogen share 1 electron each with 4 electrons of carbon.
(5) A single covalent bond is formed by sharing of two electrons.
Image

Thus, the methane molecule contains four single bonds between the carbon and hydrogen atoms.

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