Muscovite (n=1.56), or better known as mica, is a phyllosilicate mineral of aluminum and potassium. new industrial uses include being an insulator, usually for small electrical componenets. fabrication of divices with mica ofter require high precision on the determination of the mica thickness. if a mica sheet is suspended in air and reflected light shows gaps in the visible spectrum at 450, 525, and 630 nm, what is the thickness of the mica sheet?

since electrons are negative the answer is neagtaive

the answer your looking for is c).

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.