Chemistry Dog

Atomic Structure

100

[Ar] 4s1 3d5

What is the short electron configuration of Chromium

200

1/1836

What is the mass of an electron?

300

Atomic Radii and Nuclear Charge

What factors affect Ionisation energy

400

Electrons prefer to occupy an orbital on their own

What is Hund's rule?

500

736, 1450, 7740, 10500, 13600

What are first 5 ionisation energies of a group 2 element?

Bonding

100

Shared pair of electrons

What is covalent bonding?

200

Intermolecular force between partially charged hydrogen and oxygen

What is a hydrogen bond?

300

Monatomic bonding

What type of bond binds group 0 atoms?

400

High melting/boiling point, soluble, conduct electricity in only water

What are the physical properties of ionically bonded molecules?

500

Sigma and Pi bonding

What is a double bond constructed from?

Thermodynamics

100

A reaction that has a net energy release

What is an exothermic reaction?

200

J Mol^-1 K^-1

What are the units for entropy

300

When Gibb's Free Energy is negative

What is required for a spontaneous reaction to occur

400

One mole of covalent bonds is broken in the gaseous stae

What is bond dissociation enthalpy?

500

△_atH^o (Na_(s)) + △_atH^o (1/2 Cl_2(g)) + △_ieH^o (Na_(g)) +

△_eaH^o (Cl_(g)) + LEF (NaCl_(s))

What is the formation enthalpy of sodium chloride as a solid

Redox

100

Loss of electrons

What is oxidation?

200

Funnel, Burette, Pipette, Volumetric flask, Conical flask, Indicator, Acid, Base

What is the equipment for an acid-base titration?

300

Oxidation state is zero

What is the oxidation state of uncharged atoms or molecules composed of one element?

400

Oxygen is -1

What is the oxidation state of oxygen in a peroxide?

500

When a multiatomic species whose pertinent element is oxidised and reduced in two separate half-equations 

What is a disproportionation reaction?