An element ‘X’ has atomic number 20. (a) Write its electronic configuration and valency. (b) Find its position in the periodic table. (c) What will be the chemical formula of the compound when ‘X’ reacts with oxygen?
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passenger sitting in a moving bus is in motion. When the bus suddenly stops, the lower part of our body is brought to rest along with the bus whereas upper part continues to be in motion due to inertia of motion and hence falls forward.
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