Chemistry P1 and P2 today

[Saad Mughal]

Lithium and Calcium was the answer


what was the answer of "Takes 4 complete shell in a Configuration"

Calcium/Iron/Copper.

 

[areela hassan]

I think the electrons would move in two directions because the heating element in the kettle is a metal, and in metals wlectrons flow randomly in all directions. They werent talking about the flow electric current, that would have been in one direction.

yup i thought so too

 

[ritx]

Calcium is in period 4. Thats right.

 

[Saad Mughal]

I think the electrons would move in two directions because the heating element in the kettle is a metal, and in metals wlectrons flow randomly in all directions. They werent talking about the flow electric current, that would have been in one direction.

Ok, I've read about this, the heat is transferred in one direction.

 

[danial 234]

thats ryt. q was that which oxides would react withNaOH

i cannot remember, which ques is this one? :/

 

[robinhoodmustafa]

co
copper i think.... i checked in the periodic table

was it in the list??

 

[Saad Mughal]

was it in the list??

Yeah.

 

[iamLbert]

co
copper i think.... i checked in the periodic table

4 complete shell maybe not calcium cause calcium only fill 2 electrons of the fourth shell... (2,8,8,2)

 

[iamLbert]

Calcium/Iron/Copper.

I wrote calcium...

 

[areela hassan]

Calcium is in period 4. Thats right.

they said 4 full shells n calcium has n number 40 so its incorrect it was copper

 

[Saad Mughal]

4 complete shell maybe not calcium cause calcium only fill 2 electrons of the fourth shell... (2,8,8,2)

The only element in period 4 that has 4 COMPLETE shells is Krypton. Which was not one of the options.

 

[Shadow]

Ok, there was a question. In which, another method for preparing ethanoic acid was asked, does anyone remember the QUESTION wording?

Ques was ethanol reacts with oxygen in air to form ethanoic acid ... write one other way of prepare ethanoic acid ... i wrote about warming alcohol with potassium dichromate and mentioned the color change

 

[Saad Mughal]

they said 4 full shells n calcium has n number 40 so its incorrect it was copper

Check the periodic table.

 

[Saad Mughal]

Ques was ethanol reacts with oxygen in air to form ethanoic acid ... write one other way of prepare ethanoic acid ... i wrote about warming alcohol with potassium dichromate and mentioned the color change

Yeah that's correct. I misread the question.

 

[asma tareen]

i wrote calciu yayyyyyy its correct

 

[danial 234]

if u see the electronic config of Cu . Cu has one electron in its outer shell

they said 4 full shells n calcium has n number 40 so its incorrect it was copper

 

[Saad Mughal]

i wrote calciu yayyyyyy its correct

Ye calciu kya hota hai?

 

[asma tareen]

if u see the electronic config of Cu . Cu has one electron in its outer shell

a full would mean it wx noble wouldnt it

 

[asma tareen]

Ye calciu kya hota hai?

smj jhao

 

[Saad Mughal]

smj jhao

Wrestling move hai?