Which of the following explains how one of the postulates in John Dalton's atomic theory later became robust knowledge? (5 points) Select one: a. Some scientists found that some atoms of a particular element have different number of neutrons. b. Various scientists found that atoms combine in simple whole number ratios to form compounds. c. Some scientists found that atoms consist of subatomic particles with varying mass and charge. d. Various scientists found that sometimes a fraction of an atom can take part in a chemical reaction.

D!!!

Explanation:

THERE ARE NEVER FRACTIONS IN REACTIONS.

you can't have fractions when balancing equations because it wouldn't make sense to have 3/4 of a carbon atom when you cant just split atoms in ordinary chemical equations.

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation: