Shapes of Molecules and Intermolecular Forces (OCR A-Level Chemistry A): Flashcards

Hydrogen bond

Fluorine, oxygen, nitrogen

0.917 g cm⁻³

1.029 g cm⁻³

H-bonds create open tetrahedral lattice, making ice less dense

-75°C

Dashed lines, $\delta^+$/$\delta^-$, lone pairs shown

$\ce{H2O}$, $\ce{HF}$, $\ce{NH3}$

$\delta^+$ (partially positive)

Four