5-2 The Periodic Table and Atomic Structure

what can periodic table be thought of in terms of electrons?

predictive model

what is the formula for coulomb’s law?

force = coulomb constant x first charge x second charge / distance^2

if the force given by coulomb’s law is negative, the two particles are _____ to/by each other

attracted

if the force given by coulomb’s law is positive, then the two particles are being ____ to/by each other

repelled

atoms of every element except ____ have multiple protons and electrons

hydrogen

what is effective nuclear charge? (CONCEPTUAL NOT FORMULA)

net positive nuclear charge experienced by an electron

what is the formula for Zeff?

Z-S

the Z in Zeff formula is….

the number of protons

the S in the effective nuclear charge formula is…

shielding constant

what is the first step in calculating the shield constant?

write down electron configuration

if you are calculating the shielding constant and writing down the electron configuration, you always order it in terms of…

principal energy level

electrons in group to the right of the target electron contribute ___ to the shielding constant

0

electrons in the same group (principal energy level) as target electron contribute ___ to the shielding constant (except for one exception)

0.35

one exception to the same group shielding constant rule is electrons in the subshell ___, and other electrons in that subshell contribute ___ to the shielding constant of the target electron

1s, 0.30

if the target electron is in an (s,p) group with principal energy level n, every electron in the ___ principal energy levels contribute __ to the s constant, and every electron in the _ or lower energy level contributes (BLANK) to the s constant

n-1, 0.85, n-2, 1.00

if the target electron is in a d or f group, every electron in a GROUP to the left shields with ____

1.00

the S constant should be rounded to…

2 decimal places

assume 5s 5p 5d and 5f: (___,___) are in same group while (__) and (___) are their own separate groups

5s, 5p, 5d, 5f