Module 2 Flashcards
1
Q
2 atoms with the same electronegativity form what bond
A
non polar bond
2
Q
2 electrons with different electronegativity form what bond
A
polar bond
3
Q
in polar bonds, electrons are pulled closer to what atom
A
more electronegative atom
4
Q
dipole
A
polar bonds can lead to a charge separation
5
Q
examples of non polar/ hydrophobic interactions
A
Van der Waals interactions, dispersion forces, London forces
6
Q
when are hydrogen bonds favoured
A
H is covalently bonded to an electronegative element, ‘X’ (in a polar bond)
And a neighbouring molecule has a heteroatom, ‘Y’, that has available negative charge (e.g. a lone pair)
7
Q
which elements carry lone pairs of electrons
A
N, O, P, S
8
Q
sigma bond
A
overlap of 1s orbitals (overlap of one covalent bond)
9
Q
A
