Some examples from this set of practice questions
1.
what is an orbital ?
Answer: region around the nucleus that can hold up to 2 electrons, with opposite spins
2.
electro notation order
Answer: 1. energy level 2. sub shell 3. orbital
3.
shapes of orbital
Answer: spherical and dumbbell-shaped
4.
which type of orbital is spherical ?
Answer: s orbital
5.
types of subshells
Answer: s, p, d, f
Some examples from this set of practice questions
1.
ionic bond is between which types of atoms?
Answer: metal and non metal
2.
exception of an ionic bond
Answer: NH4Cl
3.
ionic bond occurs in which groups of the periodic table?
Answer: 1,2 , d block except Al
4.
definition of an ionic bond
Answer: strong electrostatic attraction between positive and negative ions
5.
3 propertes of ionic bonds
Answer: static, fixed electrons and static charge
Some examples from this set of practice questions
1.
why do covalent molecules have different shapes ?
Answer: have different number of bond and lone pairs of electrons
2.
what is a lone pair of electrons ?
Answer: not involved in covalent bonding
3.
what is a bond pair of electrons ?
Answer: involved in covalent bonding
4.
which type of electron pairs repel more strongly ?
Answer: lone pairs
5.
why do lone pairs repel more strongly than bond pairs ?
Answer: they are closer to the central atom, occupying more space than a bonded pair
Some examples from this set of practice questions
1.
3 types of intermolecular forces
Answer: london forces, permanent dipole-dipole interactions and hydrogen bonds
2.
what is meant by intermolecular forces ?
Answer: forces acting between molecules
3.
are ionic, covalent bonds types of intermolecular forces?
Answer: No because they act within molecules
4.
london forces can also be called ...
Answer: induced dipole-dipole interactions
5.
london forces occur when ..
Answer: random electron movement causes a temporary dipole, which induces a further temporary dipole in neighbouring molecules.
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