Magnesium and iron are metallic elements. How does a mole of magnesium compare with a mole of iron? A mole of iron has more atoms. They both have the same mass. A mole of magnesium has more mass. They both have the same number of atoms.

They both have the same number of atoms

Explanation:

The number that indicates the amount of particles in a compound is the Avogadro's number (NA).

It does not matter the mass of compound we have, If we have 1 mol we will be sure that we are talking about 6.02×10²³ particles

6.02×10²³ represents the amount of atoms in twelve grams of 12-pure carbon and it is considered a reference to measure the amount of all kinds of substances present in a given system.

the answer is D

Explanation:

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.

since electrons are negative the answer is neagtaive