chem topic 2

Question 1

what is the periodic table arranged by

Answer 1

atomic number

Question 2

whats the trend for Zeff?

Answer 2

increase L to R, and decrease going down

Question 3

what is atomic radius and give the trend

Answer 3

determines the radius of an atom, decreases from L to R and increases going down the table

Question 4

cation and anion

Answer 4

cat- pos charge (loses elec), smaller than parent, less electron repulsion higher Zeff
an- neg charge (gains), larger than parent atoms, more elec repulsion lower Zeff

Question 5

what is ionization energy and give the trends

Answer 5

minimum amt of energy required to to remove an electron from an atom or ion in the gas phase, IE increases L to R and decreases down the colum

Question 6

what is electron affinity and what is its trend

Answer 6

amt of energy released when an electron is added to an atom or ion in the gas phase, the greater attraction to an atom the more positive value, increase from L to R and remain constant going down

Question 7

what is metallic character and what is the trend

Answer 7

good conductors of heat and electricity and tend to lose electrons in chem reactions, Decreases for L to R and increases going down