2.The atomic number of element X is 16. Which of the following statements concerning X is correct?
A.X is black in colour
B. X can cinduct electricity in its molten state
C.X is in Periodic 2 of the Periodic Table
D. X is belong to Group 5 of the Periodic Table
2(MC)chemistry question
2007-06-13 3:11 am
回答 (3)
2007-06-17 7:36 am
✔ 最佳答案
element X is sulphur.A.X is black in colour ------>(sulphur is yellow in colour)
C.X is in Periodic 2 of the Periodic Table------>(it belongs to Periodic 3)
D.X is belong to Group 5 of the Periodic Table ------>------>(it belongs to Group 6)
SO THE ANSWER IS B.
參考: myself
2007-06-13 4:01 am
no= =
C is wrong....
period = no. of electonic occupied shell
16 protons= 16 electrons
so , electronic arrangement= 2,8,6
3 shells
so it is in period 3 ,
D id also wrong,in group 6
ans is A or B
C is wrong....
period = no. of electonic occupied shell
16 protons= 16 electrons
so , electronic arrangement= 2,8,6
3 shells
so it is in period 3 ,
D id also wrong,in group 6
ans is A or B
參考: from my textbook!
2007-06-13 3:26 am
check peroidic table , atmoic no= 16 is Sulphur
C. period 2 element
C. period 2 element
收錄日期: 2021-04-13 00:36:35
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070612000051KK03600