What determines the properties of elements? question 25 options: the number of electrons that fill the outer shell the total number of electrons the number of electron shells the number of neutrons the average atomic mass

Answer : The correct option is, the number of electrons that fill the outer shell.

Explanation :

Element : It is a pure substance which is composed of atoms of similar elements.

The elements of similar characteristics have same number of valence electrons.

As we know that in the formation of compound the number of valence electrons participate in the bonding. So, the number of electrons that fill the outer shell  determines the properties of elements.

Hence, the correct option is, the number of electrons that fill the outer shell.

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation:

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.