HELP ITS URGENT thanks if u do

1. A homogenous mixture is a mixture that appears as a single-phase or, in other words, the parts of the mixture are not distinguishable.  A heterogeneous mixture appears as two or more components that are distinguishable from each other.

a. E

b. O

c. O

d. E

e. O

f. E

2.  Molecules are made up of atoms (building blocks). Atoms consist of protons, neutrons, and electrons. Atoms cannot be separated by chemical reactions while molecules can be separated by chemical reactions.

3. A pure substance is chemically bonded together and can only be separated through chemical processes. A homogenous mixture, however, is not chemically bonded and can be separated through physical methods.

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.