How many moles of aluminum are equivalent to 4.816 × 1024 atoms?

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

How do you know when a chemical reaction has occurred

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.