₦airaland Forum

...everybody want it (to b a law,economics,medical and generally, UI student) BT few will get it...this is your chance...embrace it...talk abt it...work it...let your action meet ur passion...Am passionate abt this and am going to let my action follow...am going to work hard...I refuse to give excuses...I want to have pain,embrace pain of hard work so that I won't have the pain of regrets..I want to write the postutme knowing fully well that av done everything I intend doing...I refuse to procastinate..I refuse to being lazy...i need to start working hard now cos I know for sure that I will celebrate later....pls guys...follow me in this journey...

In case of Intermolecular force,hydrogen shld normally av the lowest BT when I was reading, i saw this and I think it is appropriate to share it with you guys...the weakest intermolecular force is vander Waal's force...vander waal force increases as the number of electron of a species increases...hydrogen has the least electron and should have the least Intermolecular force BT somehow its helium.... I dnt also know why... A way around this is to remember that.. Helium is the most ideal gas(followed by hydrogen) the reason is because it has the least Intermolecular force....thanks guys... Am signing out finally..

Whenever you read abt anything..make sure you know the trend and also the exceptions..In Carbon monoxide...carbon form two covalent bond and one dative bond with oxygen ...oxygen is the electron pair donor.....Electro Affinity is the energy released when a gaseous atom accept electron to form a gaseous negative ion..it decrease down the group because as we go down the group,a shell is added and the attraction of the positive nucleus to the electron decreases..so,the more the shell,the lesser the "EA"..the trend is ok from chlorine to iodine BT the exception is BTW chlorine and fluorine..... Although fluorine has lessee shell than chlorine e,it is too small..adding electron to it will cause little repulsion which lessened is EA than chlorine...

Damayogenius18:
Which of this has this gas has the lowest intermolecular force..(A) hydrogen ( B) helium (C) oxygen (D) Nitrogen

B

Damayogenius18:
What is/ are the chemical bond in carbon monoxide.. (A) covalent ( B) dative ( C) covalent and dative ( D) vanderwaal and covalent

C

Damayogenius18:
Which of this has the highest electron affinity in Group 7 .(A)Fluorine (B) chlorine (C) bromine (d)iodine..

B

dolapo74:
Good morning
Which of the following oxides will NOT dissolve in both dilute
hydrochloric acid and 2M sodium hydroxide solution?
a) Lead (II) oxide b) Aluminium oxide c) Zinc(II) oxide d) Calcium oxide

..lead will form ppt with dilute HCl but Al and Zn will dissolve.. The answer can't be B or C..calcium oxide is ionic,it will dissolve in HCl( by reactio ) to form calcium chloride and water..answer should be A..

Papi112:
Abeg no mind egbo oo d answer na fluorine oo
Electron affinity increases across d period and decrease down group for group 7 it starts with fluorine followed by chlorine then bromine so u c d electon affinity decrease hence d highest electron affinity goes to fluorine

Affinity ...ability to attract or wanting to gain
Electon.... Nagative charge particle

Put it together and form d answer
Now remember dat fluorine can displace any other elements in its group from der salt... Day to show u it Hunger for electron but chlorine can only displace does lower Dan it... Bromine iodine
Also it is d most electro nagative element


Don't be deceived fluorine is d answer

..Doc,what you fail to understand is that,there are alw exception...I believe that's y many ppl keep smiling after post utme thinking they have answered many question correctly BT when the result comes out,they get less than they expected...in your preparation, its good to knw abt trend( like Electron affinity decrease down the group).. The exception is btw chlorine and fluorine....chlorine has higher electron affinity that fluorine...I recently discover this,that y I asked so that all of you can know...I bliv that's how UI trap ppl( esp the brilliant minds)

Papi112:
Note rate of diffusion is inversely proportional to d relative atomic mass naw did says Dat d lower d diffusion rate d higher d molar mass of such element
For a gas to have a low diffusion rate d gas must have strong intermolecular force to bind dem together and resit set independent motion of d molecules of d gases in question Whit did said
Oxygen has d highest molecular mass hear so it has d lowest diffusion rate giving it d highest molecular force
In contract hydrogen has low molecular mass hence it posses d lowest intermolecular force... Answer is A

Also note dat d lower d density d lower d intermolecular force
Dis explains y hydrogen is used to fill balloon
Helium. Is also used but Dat if hydrogen moves faster due to loosened inter force..... I rest my case

...u are wrong again sir...the answer is helium

Papi112:
Answer.. Covalet bond
Y??
Ok c
D carbon as 4 electrons abi..valency oo
Oxygen as 6 abi .....

Now for dem to complete an octet rule each must have 8 valences abi

If carbon donates 2 electrons
And oxygen 4 Electons it mins 6 Electons Is binding dem together abi forming a triple covalet bond between dem
Now draw what I just said in a paper and count d number of electrons in each participating atom. (oxygen and carbon)
What did u find out each as a complete octet abi

Day solves it

But our oga go say wrong
But Dat d answer oo

Papi 12,i like u so much and ur argument is alw on point...m not oga o...BT u r wrong... I give you the permission to google it..lol

Gracy3535:
are u using the invisible teacher

..yes...if u don't have,you should get one...

Major0303:
Can U.I take 2 waec sittings into dept of MEDICINE.

m nt sure BT I think itz no...

DrBESTJC:
Boss, I de hail oooo....

Sir,this your statement shocked me to the bone marrows and sent cold shivers down my spine......I mean,it really got me thinking!.It takes unimaginable courage to set a goal as this...


The last time I wrote UI post UTME,I scored 53(though not prepared at all due to some circumstances in my life then that were beyond my control).I am not the 'marathon jacking type'......my own na 'slow and steady'....





Abeg no leave us go into exile ooooo.Boys like us are really learning from bosses like you,Pes13,Orezy5,condomsir,boyejo123,Afoobabs,....and many others.

I can tell you that my high score in Jamb can as well be associated to the priceless tutorials I got from bosses in this forum...

There are so many things we learn here in seconds which can take you weeks to come across in textbooks.

So please,LET US JOINTLY HELP OURSELVES GET OUR HEART DESIRES THIS YEAR(Especially UI students(Even though we are still aspirants,but we don enter be that ooo ))

Many HEADS are always better than one!!!

Doc,I will be back soonest...just want to tidy some things up...m sure you and others will keep the thread buzzing..Its been fun being here..ur own way of study is slow and steady while mine is fast and furious..lol..will miss you all..

How does a champion work?.. A champion always work hard....I pray all of us on this thread will get our desire courses in Jesus name....M just having an intermission....see you later....

IamGoke:
OKAY OOH.. confirmed! Chlorine

..lol..u r correct..

IamGoke:
I'm really learning. Doing the above doesn't really mean anything as far as you made me know the unknown!

ok

dannyboii1:
As relative molecular mass decrease...... Intermolecular mass decrease...

Therefore the element with the lowest rmm... Hydrogen

wrong sir

IamGoke:
it is C

I really appreciate ur effort...hope u did not google it?

IamGoke:
flourine

wrong again

IamGoke:
oxygen

wrong bro..

IamGoke:
What's the answer?

let's give others opportunity to attempt it...

Damayogenius18:
Which of this has the highest electron affinity in Group 7 .(A)Fluorine (B) chlorine (C) bromine (d)iodine..

..no answer? Where are the doctors in the house..

Which of this has this gas has the lowest intermolecular force..(A) hydrogen ( B) helium (C) oxygen (D) Nitrogen

IamGoke:
Covalent bond

wrong bro

What is/ are the chemical bond in carbon monoxide.. (A) covalent ( B) dative ( C) covalent and dative ( D) vanderwaal and covalent

DrBESTJC:
A is the answer.
In the first place,oxygen does not exist as an atom and the question is asking you which ELEMENT or COMPOUND.....So,I think ivumar is very correct.

You can google it and confirm.

..I posted the question..it was element/compound/atom....my mistake

Which of this has the highest electron affinity in Group 7 .(A)Fluorine (B) chlorine (C) bromine (d)iodine..

ivumar:
sorry to disturb bro,but how is Dolapo74's answer correct?... mind you, the question is a logical one. They were asking you of " which element/compound"... So I don't see a reason why the answer should be an atom.Also,the question asked about bacteria in general,,not just anaerobic bacteria. So if at all oxygen attacks anaerobic bacteria(Which I don't even think is possible), i don't think it will attack aerobic bacteria.So it should be a compound or an element as the question rightly asked. I think the answer is A. Or what do you think?

....when chlorine is added to water,it undergoes disproportional reaction to give HCl and HClO..HClO decomposes in solution to produce reactive oxygen atom that kill bacteria in water....eida aerobic or a anaerobic ....

Aybalance:
its right bro... I originally picked D but when i checked the ans was lake due to its stationary nature thus accumulating more ions...evening bro...

evn Sir

Aybalance:
which of the following has the highest degree of hard water...A.rain water B.lake water C.Bore hole water D.river water

still confuse..guess BTW borehole and lake..cant be river or rain....if well was in the option,will have gone for it...I think is borehole not lake...

Aybalance:
which of the following has the highest degree of hard water...A.rain water B.lake water C.Bore hole water D.river water

..looking at the question like if this one come out of post utme I don fail be that..not rain,will choose B....m really confuse..lol

centurionpapa:
Good score
God grant your heart desire.
We're in same shoe


#ui mbbs#

..amen bro...