Question

    Which of the following element is required for the

    conversion of the solar energy? 
    A Silicon Correct Answer Incorrect Answer
    B Rubidium Correct Answer Incorrect Answer
    C Potassium Correct Answer Incorrect Answer
    D Thallium Correct Answer Incorrect Answer

    Solution

    Silicon is what is known as a semi-conductor, meaning that it shares some of the properties of metals and some of those of an electrical insulator, making it a key ingredient in solar cells. Thus, this element is required for the solar energy conversion. 

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