What is the nuclear binding energy in joules for an atom of lithium? assume the following: mass defect = 6.9986235 × 10-29 kilograms. use e = mc2, with c = 3 × 108 m/s. 6.3 × 10-12 joules 0.6352 × 10-8 joules 6.3 × 10-8 joules 21.124 × 10-21 joules

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

Citric acid has a ph between 1 and 3.  it is considered to be aa. weak acidb. weak basec. strong based. strong acid

With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals