Flashcards in Section 3: Bonding - Covalent Bonding Deck (10):
In which incident does a covalent bond form?
If two elements have a small difference in electronegativity then a covalent bond will form
What happens in a covalent bond?
In a covalent bond two or more atoms share electrons to complete their outer shells , they are able to share electrons as the postive nucleus in each atom attracts the negative electron of the other atom that is being shared in the pair
What happens in a double bond?
In a double bond two atoms share two pairs of electrons.
What is a simple covalent compound?
A simple covalent compound is made up of lots of individual covalent molecules . In each covalent molecules there are covalent bonds but between covalent molecules there are intermolecular forces and not covalent bonds. Intermolecular forces are much weaker than covalent bonds.
Why does a simple covalent compound have low melting and boiling points?
A simple covalent compound has low melting and boiling points because it is held together by intermolecular forces which are weak and thus take little energy to overcome.
What is a giant covalent structure (macromolecular structure) ?
A macromolecular structure is a network of atoms each bonded covalently to one another.
Name two macromolecular structures
What is another way that coordinate bonding can be referred to as?
Dative covalent bonding
What happens in a dative covalent bond?
In a dative covalent bond one atom donate both electrons to the bonding pair.