Question

What is the composition, in atom percent, of an alloy that consists of 4.5 wt% Pb and 95.5 wt% Sn?

a. 2.6 at% Pb and 97.4 at% Sn.
b. 7.6 at% Pb and 92.4 at% Sn.
c. 97.4 at% Pb and 2.6 at% Sn.
d. 92.4 at% Pb and 7.6 at% Sn.

Answer 1

Answer: Option A is correct -- 2.6 at% Pb and 97.4 at% Sn.

Step-by-step explanation:

Option A is the only correct option -- 2.6 at% Pb and 97.4 at% Sn. While option B, which is 7.6 at% Pb and 92.4 at% Sn. and option C, which is 97.4 at% Pb and 2.6 at% Sn. and option D, which is 92.4 at% Pb and 7.6 at% Sn. are wrong.