In a chemical reaction, substance r reacts with compound xy to produce 470 g of compound rx. if the theoretical yield of
rx is 56.0 g, what is its percent yield?
actual yield
use %yield - theoretical veld x 100
9.00%
16.1%
83.9%
119%

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts

Just took the quiz on edgenuity and the correct answer is "c.  4.54 x  10–12  j"

Order of filling levels and sublevels of electrons: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²3f¹⁴5d¹⁰6p⁶for an element with 5 electrons in the 3d energy level: full configuration: 1s²2s²2p⁶3s²3p³.

Answer/when the cell uses energy;