You needed to make sure your glassware was dry before proceeding with the hydroboration reaction and an excess of hydroborane was used to counter the small amounts of water present in the reaction. Why is the borane-THF reagent so reactive with water? Hint: What is the electronegativity of B compared to H?

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

Neither model is able to show the reactivity of potassium.