2. Jonah is completing the table shown below. What are the best headings for Columns A and Columns B? Column
Com
Na
Naci
Ca
CaCl
Ft,
Fe
Pb
PEN
a. Column A: Atoms; Column B: Mixtures
b. Column A: Molecules; Column B: Atoms
C Column A: Elements; Column B: Compounds
d. Column A: Atoms; Column B: Elements
Answer
B 500 (8 P 8A

- aluminum and copper chloride.

- the chloride ion to separate the aluminum from the oxygen so that the aluminum can react with the copper ions (and the water molecules).

just did the assignment and the answer was #1 +2 n

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.