Unicellular organisms are made of multiple cells.

O True
O False

false

Explanation:unicellular organisms mean organisms made up of single cell eg;bacteria,some protists and multicellular organisms mean organisms made up of multiple cells eg;animals, plants

4d^55s^1 ( third choice)

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.