Chem Bonding

Bonding angle of Linear

180

Bonding angle of Trigonal planar

120

Bonding angle of Tetrahedral

109.5

Bonding angle of Trigonal pyramidal

107

Bonding angle of Bent V or Angular

105

What kind of bonding happens when the electronegativity of two atoms are relatively high?

Molecular bond

What kind of bonding happens when the electronegativity of two atoms is very different?

Ionic bond

What kind of bonding happens when the electronegativity of two atoms is relatively low

Metallic Bond

In what bond is a crystal lattice formed?

Ionic bond

In what bond is there a sea of electrons?

Metallic Bond

What bond created the physical property of ductibillity?

Metallic Bond

What does three horizontal line mean in a structural diagram?

Triple Bond

The atom that is found in the middle and other atoms are attached to is called the

Central atom

AX2

Linear

AX3

Trigonal planar

AX4

Tetrahedral

AX3E

Trigonal pyramidal

AX2E2

Bent

AXE3

linear

Number of bond pairs and lone pairs for linear (linear)

B-2, L-0

Number of bond pairs and lone pairs for Trigonal planar

B-3, L-0

Number of bond pairs and lone pairs for Tetrahedral

B-4, L-0

Number of bond pairs and lone pairs for Trigonal pyramidal

B-3, L-1

Number of bond pairs and lone pairs for Bent

B-2, L-2

Number of bond pairs and lone pairs for Linear (tetrahedral)

B-1, L-3

If bonded atoms have the same electronegativity that makes it __

Non polar

If bonded atoms have different electronegativity that makes it ___

Polar

Forces of attractions/ repulsion between molecules

Intermolecular forces

Forces of attractions/repulsion within a molecule

Intramolecular forces

Negative ends of polar molecules are attracted to positive ends of the neighboring polar molecules

Dipole-Dipole

This force is caused by the attraction of electrons to other molecules nuclei

London force

The greater the number of electrons in the atoms of a molecule, the greater the _

Dispersion forces

_ if a good measure of inter molecular force

Boiling point

The greater the number of electrons in a molecule, the greater the __ between them, the higher the boiling point

London forces

molecules have the same number of electrons

Isoelectronic

_ molecules with have dipole-dipole forces along with london forces

Polar

A _ bond is where a hydrogen nucleus (proton) is shared between electrons on neighboring molecules

Hydrogen

What are the three highly electronegative atom that become important in hydrogen bonding?

Nitrogen, Oxygen, Fluorine

What type of bond is a hydrogen bond ?

Intermolecular

What type of bond is a covalent bond?

Intramolecular

___ bonding is the strongest intermolecular force

Hydrogen

Water has a high melting and boiling point because of what?

The hydrogen bond

What type of bond holds DNA together

Hydrogen

What is the scale of forces from low to high?

London dispersion, Dipole-Dipole, Hydrogen bonding, Metallic (wide range), Molecular, Ionic, Network Covalent

What are the three network covalents?

Diamond, SiC, SiO2

What type of bond does the intermolecular forces of dipole-dipole Hydrogen bonding, and london forces happen in

Molecular

Does water have high intermolecular forces or low?

High

Large differences in electronegaticity between metal and non-metal results in the transfer of what

Electrons

Crystal lattice structure is a __ arrangement

Stable

Ionic crystal are surrounded by a __ charge

Opposite

Metallic crystals valence electrons are not help strongly by individual atoms, but act as __ negative glue that holds the positive ions together

Freely moving

Molecular Crystals are held together by relatively _ intermolecular forces

Weak

Covalent network crystals are usually much ___ and have a much higher ___ and ___ point than that of an ionic crystal

Harder, Melting and boiling

Common Example of a Covalent network crystal that is very strong is

Diamond

Semiconductors require a __ amount of energy to jump to the nest higher energy level

Small