In an element’s square on the periodic table, the number with the greatest value represents the

a. number of neutrons.
b. number of electrons.
c. atomic number.
d. atomic mass.

D.atomic mass.

Explanation: The general representation of an element is given by:

X = chemical symbol of element

Z= atomic number= which represents the number of electrons.

A= mass number or atomic mass =which represents the number of electrons + number of neutrons

Thus mass number is greater than number of electrons and number of neutrons as it is the sum of both.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).