1.

Atomic weight of Boron is 10.81 and it has twoisotopes B10 and B11, then the ratio ofSB10 B11 in nature would be(1) 15 16(3) 19: 81(4) 81: 19

Answer» Atomic weight of Boron is 10.81 and it has twoisotopes B10 and B11, then the ratio ofSB10 B11 in nature would be(1) 15 16(3) 19: 81(4) 81: 19


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