Lecture 4 Flashcards
Why do atom form bonds?
Atoms bond with each other in order to gain a stable arrangement of outer-shell electrons, like the atoms of group 0.
What is ionic bonding?
Ionic bonding is the electrostatic attraction between positive and negative ions in an ionic crystal lattice.
What is a covalent bond?
Covalent bonds are formed when the outer electrons of two atoms are shared.
What is a metallic bond?
Metallic bonding is a type of chemical bonding that arises from the electrostatic attractive force between conduction electrons and positively charged metal ions.
Properties of Ionic Compound?
Ionic compounds are usually soluble in water. The water molecules are able to separate the ions from each other. Ionic compounds conduct electricity when melted or dissolved in water.
Why are ionic bonds usually hard?
Ionic compounds are made up of oppositely charged ions which are held together by strong electrostatic force of attraction.
What is a molecule?
A molecule is a group of atoms held together by covalent bonds (hydrogen)
Diamonds properties
It is very hard. High melting point. Can’t conduct electricity.
Properties of covalent compounds
Covalent compounds tend to be insoluble in water.
They do not conduct electricity.
Compare and contrast the electron configurations of the transition metals and the noble gases. Explain any differences or similarities observed
Transition metals typically have electron configurations that involve filling the d orbitals, while noble gases have filled electron shells. Transition metals exhibit similarities in their electron configurations within the same period but differ across periods due to variations in energy levels. Noble gases have stable configurations with completely filled outer shells, leading to their low reactivity.
