cacbon:

(a)  

oxi:

(a)  

Nitơ

(a)  

Flo

(a)  

Clo

(a)  

Brom

(a)  

Magie

(a)  

canxi

(a)  

nhôm

(a)  

sắt

(a)  

đồng

(a)  

natri

(a)  

kali

(a)  

photpho

(a)  

lưu huỳnh

(a)  

bạc

(a)  

kẽm

(a)  

bari

(a)  

silic

(a)  

oxit

(a)  

axit

(a)  

bazơ

(a)