Explain why metallic elements bend, while solid and non-metallic elements break or crumble?

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

Which compound contain an iron with a 3+ charge

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?