Which is the smallest number?
o a. 3.5 x 104
o b. 2.4 x 103
o c. 1.4×10²2
o d. 4.9 x 10-7

What I came up with was D equaling out to be 42

Explanation:

Im assuming you just do the math

A. 3.5 x 104 = 364

B. 2.4 x 103 = 247.2

C. 1.4 x 10^2_2 = 280

D. 4.9 x 10-7 = 42

I hope I helped.

"the periodic table is arranged in order of atomic number."