Molecular structure Flashcards
What is the molecular structure of a central atom surrounded by two outer atoms with no lone pairs?
linear
What is the molecular structure of a central atom surrounded by three outer atoms and no lone pairs?
trigonal planar
What is the molecular structure of a central atom surrounded by two outer atoms and one lone pair?
bent
What is the molecular structure of a central atom surrounded by four outer electrons and no lone pairs?
tetrahedral
What is the molecular structure of a central atom surrounded by three outer atoms and one lone pair?
trigonal pyramidal
What is the molecular structure of a central atom surrounded by two outer atoms and two lone pair?
bent
What is the molecular structure of a central atom surrounded by five out atoms and no lone pairs?
trigonal bi-pyramidal
What is the molecular structure of a central atom surrounded by four outer atoms and one lone pair?
seesaw
What is the molecular structure of a central atoms surrounded by three outer atoms and two lone pairs?
t-shaped
What is the molecular structure of a central atom surrounded by two outer atoms and three lone pairs?
linear
What is the molecular structure of a central atom surrounded by six outer atoms and no lone pairs?
octahedral
What is the molecular structure of a central atoms surrounded by five outer atoms and one lone pair?
square pyramidal
What is the molecular structure of a central atom surrounded by four outer electrons and two lone pairs?
square planar
What is the energy that is released when a gas phase atoms picks up an electron? X + e- –> X- + energy
Electron Affinity
What is the general trend of electron affinity?
What is the general trend of effective attraction
increases up a column and across a row
What is the chemical and physical properties associated with metals?
Metallic Character
What is the general trend of metallic character?
increases down a column and from right to left in a row
What is a metal and a non metal bound together by electrostatic attraction?
Ionic Bond
What are electrons that are found in fully filled shells?
Core electrons
What are electrons that are found in partially filled shells that are higher in energy?
Valence electrons
What gives rise to physical and chemical properties?
Configurations
What is it called when core e- block the outer e- from experiencing the full charge of the nucleus?
Screening/ Shielding
Zactual> Zeff>1
What is the periodic trend of valence electrons attrition to nucleus? Distance? z?
Valence electrons: increase up and across
Distance; decreases up a column
Charge: increases across a period
What is ionization energy?
Maximum energy required to remove an e- from an elements as a gas phase atom; X+energy>X+ + e-
What is the periodic ionization trend?
increases up and across
