What is the electronegativity value for an element whose atoms in the ground state have an electron configuration of 2-8-8-1 ? PL HEL I NEE ANSWER RN

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

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

What are some natural measures of time