Chemistry, asked by SandraRobin8760, 11 months ago

The relative abundance of two rubidium isotopes of atomic weight 85 and 87 are 75% and 25% respectively. The average atomic weight of rubidium is

Answers

Answered by bam10042001

6

Answer:

85.5

Explanation:

avg. at mass = [(85 x 75)+(87 x 25)]/100 = 85.5

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