³⁵₁₇Cl and ³⁷₁₇Cl are two isotopes of chlorine. If average atomic weight is 35.5

Cl And Cl Are Two Isotopes Of Chlorine If Average Chemistry QuestionCl And Cl Are Two Isotopes Of Chlorine If Average Chemistry Question

³⁵₁₇Cl and ³⁷₁₇Cl are two isotopes of chlorine. If average atomic weight is 35.5 then ratio of these two isotopes is

Options

(a) 35 : 37
(b) 1 : 3
(c) 3 : 1
(d) 2 : 1

Correct Answer:

3 : 1

Explanation:

Average atomic mass A = (X x a + Y x b) / (X+Y)
35.5 = (35X + 37Y) / (X+Y)
X/Y= 3 / 1

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