Question
What do you understand by the tern "electronic configuration" of an element? Write down the electronic configuration of oxygen (At. No. = 8).
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Through which of the following materials can sound travel?
Wood, air, water, sream, ice, hydrogen, steel, diamond.
What are the ceilings of concert halls curved?
Write two differences between plant cell and animal cell.
For hearing the loudest ticking sound heard by the ear, find the angle x in the Fig.
