True or False
Electron Affinity
Electron Affinity
E-geometry is found by counting the number of lone pairs and shared pairs
True
Beryllium difluoride
BeF₂, Linear, 180°, no lone pairs
Carbon dioxide
CO₂, Linear, 180°, two double bonds
HCN (Hydrogen cyanide):
Linear, 180°, triple bond
Shape is determined by the amount of shared pairs and lone pairs
False
Boron trifluoride
BF₃, Trigonal planar, 120°
Sulfur dioxide
SO₂, Bent/V-shaped, <120° (one lone pair)
Nitrate ion
NO₃⁻, Trigonal planar, 120°
If there is a triple bond in the molecule, it counts as 3 shared pairs
False, it only counts as 1
CH₄ (Methane)
Tetrahedral, 109.5°
NH₃ (Ammonia)
Trigonal pyramidal, 107° (one lone pair)
H₂O (Water)
Bent/V-shaped, 104.5° (two lone pairs)
You get the amount of valence electrons from the atomic number
False, you get it from the group number it's in
Silicon tetrachloride
SiCl₄, Tetrahedral, 109.5°.
Ammonium ion
NH₄⁺, Tetrahedral, 109.5°.
Phosphorus trichloride
PCl3, E-geometry tetrahedral, shape Trigonal pyramid
Polarity is the electronegativity difference and symmetry
True
H2S
E-geometry: Tetrahedral, Shape: Bent, Angle:109.5
Oxygen difloride
OF2, E-geometry: Tetrahedral, Shape Bent, Angle: <109.5
NO-2
E-geometry: Trigonal Planar, Shape: Bent, Angle: <120