Question

let me know this answer​

Answer 1

Answer:

200 amu

Explanation:

Average atomic mass= [Atomic mass of X200×abundance + Atomic mass of X199×abundance + Atomic mass of X202×abundance]/100

=[200×90+199×8.0+202×2.0]/100

=199.96≈200u.

Answer 2

Answer:

option: (d)

Explanation:

Atomic mass = M1P1+M2P2+M3P3+...

= 200x90% + 199x8% + 202x2%

= 180+15.92+4.04

= 199.96 ≈ 200amu