Answers26-27 CFISD TX-Chemistry A CRAtomic Numbers and Electron Configurations

Atomic Numbers and Electron Configurations Answers

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23
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Magnesium (Mg):

A
less reactive than sodium
B
dull
C
a gas
24
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Neon (Ne):

A
shiny
B
a conductor
C
a gas
25

Nickel (Ni):

A
forms colorful compounds
B
reactive metal
C
gas
26

Fluorine (F):

A
highly reactive nonmetal
B
shiny
C
a conductor
28

: atomic number 15

Answer:

phosphorus: atomic number 15

29

Developed the law of octaves:

A
Lavoisier
B
Dobereiner
C
Newlands
D
Mendeleev
E
Moseley
30

Organized elements according to increasing atomic mass:

A
Lavoisier
B
Dobereiner
C
Mendeleev
D
Moseley
31

Ca:

A
alkali metal
B
alkaline earth metal
32

Cs:

A
alkali metal
B
alkaline earth metal
33

group IIA:

A
helium
B
carbon
C
magnesium
34

vanadium (V):

A
alkali metal
B
alkaline earth metal
C
transition metal
D
inner transition metal
E
halogen
F
noble gas
35

rhenium:

Answer:

Re

36

: atomic number 45

Answer:

rhodium: atomic number 45

37

nonreactive:

A
hydrogen
B
argon
C
aluminum
38

xenon (Xe):

A
alkali metal
B
alkaline earth metal
C
transition metal
D
inner transition metal
E
halogen
F
noble gas
39

: As

Answer:

arsenic: As

40

iodine (I):

A
alkali metal
B
alkaline earth metal
C
transition metal
D
inner transition metal
E
halogen
F
noble gas
41

: K

Answer:

potassium: K

42

tin:

Answer:

Sn

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