Science, asked by sidrajpatel2003, 7 months ago

An element exist in two isotopic forms X(120) and X(122) in equal abundance.The average atomic mass of element is 121.44 .If each atom of X(120) are 10.04 times heavier than one C(12) atom then how many times each atom of X(122) is heavier than one C(12) atom?
(A) 10.04
(B) 10.4
(C) 10.2
(D) 10.167

Answers

Answered by mohishkhan9996
2

Answer:

hey... mate ans... is c 10.2

plzz mark as brainlist....XD

Answered by REDPLANET
6

Answer:

Mass of X¹²⁰ = 10.04 x 12 = 120.48

Average mass = X¹²⁰/2 + X¹²²/2

121.44 = 120.48/2 + X¹²²/2

∴ X¹²² = 10.2 × 12

CORRECT ANSWER IS (B) 10.4

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