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