What percentage of a sample original radioactive remains after 5 half-lives?

Where can i find naap lab answers sheet/key?

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent