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The heaviest metal is - Osmium (Os).सबसे भारी धातु है – ऑस्मियम (Os)The lightest metal is lithium (Li).सबसे हल्की धातु है – लिथियम (Li)The lightest element is hydrogen.सबसे हल्का à¤...
1. Ratio: We use ratios to make comparisons between two things. When we express ratios in words, we use the word "to"--we say "the ratio of something to something else." Ratios can be written in several different ways: as a fraction, using the word "to", or with a ...