Site Search:
 
Dave's ESL Cafe's Student Discussion Forums Forum Index Dave's ESL Cafe's Student Discussion Forums
"The Internet's Meeting Place for ESL/EFL Students and Teachers from Around the World!"
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Chemistry Help!!!!!

 
Post new topic   Reply to topic    Dave's ESL Cafe's Student Discussion Forums Forum Index -> Science
View previous topic :: View next topic  
Author Message
Chemgirl01



Joined: 25 Jun 2005
Posts: 2

PostPosted: Sat Jun 25, 2005 6:32 pm    Post subject: Chemistry Help!!!!! Reply with quote

Can anyone help me with these questions! Thank you!

2. Select atom with highest electronegativity.
a) O b) P

3. Select atom with lowest ionization energy.
a) Rb b) K

4. Select atom w/ highest chemica reactivity.
a) Ca b) Ba

5. Calculate the % ionic character of a chemical bond between magnesium & nitrogen.
a) 51% b) 49% c) 47% d) 55%

6. Calculate % covalent character of a chemical bond between chlorine & sodium.
a) 34% b) 30% c) 36% d) 70%
Back to top
View user's profile Send private message
Dinah



Joined: 21 May 2005
Posts: 52
Location: China

PostPosted: Tue Aug 09, 2005 5:33 am    Post subject: Reply with quote

K Ca Na Mg Al Zn Fe Sn Pb (H) Cu Hg Ag Pt Au
hige active low active
Zn +2HCl=H2+ZnCl2
_________________
I like Jonathan Jackson~!
Tuck everlasting
If I am Winne I'll choose to drink from the spring.
I still remember Jesse said Winne Foster I love you untill I'm dead.Of course Jesse will never dead.
Back to top
View user's profile Send private message
String



Joined: 07 Apr 2009
Posts: 28

PostPosted: Fri Apr 10, 2009 7:25 am    Post subject: Re: Chemistry Help!!!!! Reply with quote

Chemgirl01 wrote:
Can anyone help me with these questions! Thank you!

2. Select atom with highest electronegativity.
a) O b) P

3. Select atom with lowest ionization energy.
a) Rb b) K

4. Select atom w/ highest chemica reactivity.
a) Ca b) Ba

5. Calculate the % ionic character of a chemical bond between magnesium & nitrogen.
a) 51% b) 49% c) 47% d) 55%

6. Calculate % covalent character of a chemical bond between chlorine & sodium.
a) 34% b) 30% c) 36% d) 70%


Here is your Answer
Q2 (O)
Q3(Rb)
Q4(Ba)
Q5(55%)
Q6(30%)
_________________
String
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Dave's ESL Cafe's Student Discussion Forums Forum Index -> Science All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Dave's ESL Cafe is maintained by the one and only Dave Sperling.
Banner Advertising | Bookstore / Alta Books | FAQs | Articles | Interview with Dave
Copyright © 2018 Dave's ESL Cafe | All Rights Reserved | Contact Dave's ESL Cafe | Site Map

Teachers College, Columbia University: Train to Teach English Here or Abroad
SIT
Powered by phpBB © 2001, 2002 phpBB Group