Problem

From its position in the periodic table, determin…

02:44

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Problem 15 Easy Difficulty

Explain the difference between a nonpolar covalent bond, a polar covalent bond, and an ionic bond
(a) Br or Cl
(b) N or O
(c) S or O
(d) P or S
(e) Si or N
(f) Ba or P
(g) N or K

Answer

a)
According to the general rule bromine $(\mathrm{M} \text { shell; } \mathrm{n}=3)$ is less electronegative than chlorine
$\text { (L shell; } \mathrm{n}=2)$ .
b)
Along the period electronegativity increases so one would expect that oxygen
(atomic number- 8 ) is more electronegative than nitrogen (atomic number-7) which is clear
from the electronegativity values. The EN value of oxygen is 3.5 and that of nitrogen is 3.0 .
c)
Electronegativity decreases down the group. Suftur (M shell; $n=3$ is next to oxygen
$\text { (Lishell; } n=2)$ in the group (Group 16) and so compared to sulfur, oxygen is more
electronegative $[\mathrm{EN}(\mathrm{S})=2.5 ; \mathrm{EN}(\mathrm{O})=3.5]$
d)
Sulfur is next to phosphorus in the period and so the EN of sulfur $(2.5)$ is higher than that of
phosphorus $(2.2) .$
e)
$\text { Silicon is in second period (atomic number } Z=14 \text { ) and nitrogen (atomic number } Z=7)$ is in
frist priod and herce accorring the general rule nitrogen is more electronegative than sillicon.
The EN values of silicon and nitrogen is 1.9 and 3.0 respectively.
f)
Barium is an alkaline earth metal (group 2 ) and is less electronegative and phosphorus is a
non-metal and is at the far right (group15) which means it is more electronegative. Also atomic
number of barium is 56 and phosphorus is $15 ;$ barium atom is much larger than phosphorus.
g)
Nitrogen is more electronegative because nitrogen is a non-metal and potassium is a metal.
Potassium is ready to lose electron and hence it is less electronegative than nitrogen.

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Video Transcript

here. The question is, from your supposition in the periodic table didn't mean which down in each pair is more little nugget. Now, first of all, when by the position you have to determine the electron negativity, then you're supposed to know that how they turn evidence is changing in the battery. From left to right, Lecter negativity is increasing. It is increasing from left to right in the majority and from Dr Bottom recoup little negativity these days. So now dig the first gosh a the Coche Elise which is more electoral, netted you out of these two beer and see it. Br ng is here and seal is here and both are in the surrounding group and veterinary duties de closing down the group. That one's Vieira's lesson after negative, so crude and should be more like eternity. So the onset is Trudy in Kissel be night prison and boxes Night Rosalynn Oxes are both are members of the same breed. That is the second ticket on Electra Narrative is it is increasing from left to right. That means ox is and should be more literally in the next. So the answer is oxygen so far and orcs isn't cell for oxygen. Both are in the scene. 16 surfer is coming off. Paroxysm Andi left in evidence is decreasing so oxes and should be more literal. Entity D force force and suffer force Fullest and sulfur both hot in the same bridge. This is force for us in 15 group and surfers in 16. So out of these two surfer should be more like to get you as complete doofus fruits now come to e Hey, cyclical and nitrogen Cyclical and nature's night wasn't easy. 15 Group first member and silicon, His second member off 14 group night Prison should be more. You're still negative s comfort too. Off ese radium and force rules Video is in second group It is metal medium is here and phosphorus is non metal and it is here, so naturally force falls is morally into negative s comfortably and last one G natures and and British gorgeous young is again metal which is more Electra positive. Not a little negative and s comfort this night Prison should be more little negative dis presenting your pickle. So the correct answer is nature's in G

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