Lithium, Beryllium, Sodium, Magnesium, Aluminium, Potassium, and Calcium are metals in the first twenty elements. Hydrogen, Helium, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Phosphorous, Sulphur, Chlorine, and Argon are the non-metals in the first twenty elements.
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after reading the poem on killing a tree who is sensitized you as a human being explain with exampleA manufacturer gives 10% commission on the written price to a shopkeeper. What does the shopkeeper pay in cash for an article with written price is Rs 1500?the population of a city increase from 160000 to 1 lakh 80 thousand in a year find the percentage increase in population