(DONE) Lecture 10

Question 1

Paramagnetic atoms/ions/ compounds: electron arrangements (2)

Answer 1

• have electron arrangements which result in one or more unpaired electrons
• materials are attracted into an external magnetic field

Question 2

diamagnetic atoms/ions/ compounds (2)

Answer 2

• All electrons are paired

- Slightly repelled by an external magnetic field

Question 3

ground state electron configuration (2)

Answer 3

• the normal/ resting state of an atom/ ion

- has the lowest possible energy

Question 4

excited state of an atom (2)

Answer 4

• absorb energy and move into a higher energy orbital
• atoms will lose energy in the form of light as electrons move from a higher energy orbital to an available orbital of lower energy

Question 5

distinguishing electron

Answer 5

• the last electron added to the electron configuration

Question 6

valence electron

Answer 6

• all electrons in the outermost shell

Question 7

core electrons

Answer 7

• all electrons that are not valence

Question 8

polyelectronic atoms

Answer 8

atom with more than one electron

Question 9

what is the configuration of Cr

Answer 9

[Ar] 4s1 3d5

Question 10

what is the configuration of Cu

Answer 10

[Ar] 4s1 3d10

Question 11

explain the octet rule

Answer 11

• elements tend to lose, gain, or share enough electrons to produce a noble gas electron configuration to form compounds