問題一覧
1
solid in room temp
metal
2
gasnin room temp
nonmetal
3
good semiconductor
metaloids
4
column of elements
groups
5
change in physical and chemical properties
group
6
change gradually
period
7
peried in also known as
series
8
row and horizontal
periods
9
allows to pridic the chemical behavior of a elements
periodic table of elements
10
how many symbols dose a element have?
1 or 2
11
what is a valence
outermost electrions
12
Li
lithium
13
Na
sodium
14
k
potassium
15
Rb
rubidium
16
Cs
cesium
17
Fr
francium
18
be
berillium
19
mg
magnisium
20
ca
calsium
21
sr
stronyium
22
ba
barium
23
ra
radium
24
tend to lose 1 valence
alkali metals
25
high melting and boiling point
transition metals
26
color grey
alkali earth metals
27
fairly reactive
Icasogens
28
have 5 valence
pnictogens
29
not very reactive
crystallgens
30
all solid exept for oxygen
chalcogens
31
highly reactive
halogens
32
least reactive
noble gases