Exam 2 Lecture 8

Question 1

Hydrogen atom orbitral energiesdon’t have any

Answer 1

crossover or splitting

Question 2

Multi-electron atoms have…

Answer 2

crossover and splitting

Question 3

…..are lower in multielectron atom

Answer 3

Principle energies

Question 4

•Energies of subshells are____ in multielectron atoms

Answer 4

“split”

Question 5

Some _______in multielectron atoms results in certain subshells having_________

Answer 5

crossover of energy levels

lower energies than subshells with lower “n” values

Question 6

What is responsible fo rthe differences in energies for the single- and multielectron atoms?

Answer 6

ELECTROSTATIC INTERACTIONS

Question 7

m_s describes electron …..

Answer 7

spin

Question 8

The Pauli exclusion principle:

Answer 8

No two electrons in an atom can have the same set of four quantum numbers four quantum numbers

Question 9

What’s the 1^st orbital to experience crossover?

Answer 9

Question 10

What’s the 2^nd orbital to experience crossover?

Answer 10

Question 11

What’s the 3^rd orbital to experience crossover?

Answer 11

Question 12

What does this represent?

Answer 12

direction of electron spin

Question 13

Populate Lithium orbitals

Answer 13

Question 14

Populate Berillium orbitals

Answer 14

Question 15

Populate Boron orbitals

Answer 15

Question 16

An electron will occupy …..

Answer 16

the lowest energy orbital that is available

Question 17

Complete the sentence, name the principle

A maximum of ______can occupy any given orbital

Answer 17

2 electrons

(Pauli exclusion principle)

Question 18

degenerate orbitals

Answer 18

orbitals of the same energy

Question 19

Hund s’ rule

Answer 19

For degenerate orbitals the lowest energy is attained when the number of electrons with the same spin is maximized

Question 20

complete the sentence, name the rule…

For _____the lowest energy is attained when ________

Answer 20

degenerate orbitals,

the number of electrons with the same spin is maximized

HUND’s RULE

Question 21

Populate the Carbon atom

Answer 21

12

Question 22

Populate the Nitrogen atom

Answer 22

Question 23

Write the electron configuration for Oxygen

Answer 23

Question 24

Some energy level crossovers occur due to…..

Answer 24

electrostatic effect

Question 25

The principle quantum number (**n**) of **d block** elements is **one less than** that of\_\_\_\_\_\_\_\_\_

Answer 25

the adjacent **s** and **p block** elements

Question 26

The principle quantum number**(n)** of **f block** elements is **two less than**

Answer 26

that of the adjacent **s** and **p** block elements,

Question 27

The principle quantum number**(n)** of **f block** elements **is one less** than

Answer 27

the adjacent **d block**

Question 28

Where is the s block?

Answer 28

Question 29

Where is the p block?

Answer 29

Question 30

Where is the d block?

Answer 30

transition metals

Question 31

Where is the f block?

Answer 31

Lanthanides and Actinides

Question 32

Auf-Bau Principle:

Answer 32

Lower electron orbitals fill before higher orbitals do, "building up" the electron shell. The end result is that the atom, ion, or molecule forms the most stable electron configuration. (The periodic table color coded by principle quantum number of the orbital being filled)

Question 33

Auf-Bau Principle periodic table

Answer 33

Question 34

Auf-Bau Rule

Answer 34