An ionic compound is found to contain 28.9% potassium, 23.7% sulphur and 47.4% oxygen. The relative formula mass of the compound is 270. What is the formula of the compound?

Categorize them by metal, nonmetal, in periodic tableductilenon-ductilemalleableoften gain electrons easilygood conductorpoor conductorcan be liquidselements

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.

Which statement accurately represents the arrangement of electrons in bohr’s atomic model?