Which of the following is the definition of a hypothesis?
a. a testable scientific question
b. an interesting question for further research
c. an informed explanation that can be tested
d. a type of experiment that provides information

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.

how important do you think an instrument is to the musician who plays it?