Question
In methane (CH₄), what are the valence electrons of
carbon and hydrogen respectively?Solution
Methane (CH₄) is a simple carbon compound commonly used as fuel and a major component of biogas and CNG. In this molecule, carbon has 4 valence electrons (making it tetravalent), while hydrogen has 1 valence electron. This electronic structure allows carbon to form four bonds with hydrogen atoms in methane.
Calculate the speed of light in diamond if its refractive index is 2.4.
(Speed of light = 3 × 10⁸ m/s)
The Pointing vector of electromagnetic waves has the same dimensions as that of:
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The unit of electric power is —
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