Cho biết các nguyên tử A, B,C, D có phân mức năng lượng cao nhất trong cấu hình electron lần lượt là 3s2,3p5,3d6,4p3 a) viết cấu hình electron của mỗi nguyên tử A, B,C, D
b) nguyên tố nào là kim loại, phi kim, giải thích?

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)