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Draw the Lewis dot structure for Mg and S. Is it an ionic or covalent bond?

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gus0106 | Student, Undergraduate | eNotes Newbie

Posted March 14, 2009 at 3:29 AM via web

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Draw the Lewis dot structure for Mg and S. Is it an ionic or covalent bond?

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mssigman | Middle School Teacher | (Level 1) Adjunct Educator

Posted March 29, 2009 at 2:05 PM (Answer #1)

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The Lewis dot structure for Magnesium is an Mg with 2 dots which stand for its two valence electrons.

The Lewis dot structure for Sulfur is an S with 6 dots which stand for its six valence electrons.

These two elements when bonded together form an ionic bond as the Magnesium loses its two valence electrons to the Sulfur atom.  Both atoms then have complete outer electron shells.  The Magnesium atom has a +2 charge and the Sulfur atom has a -2 charge.  This is what causes the attraction that bonds these two atoms.

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vidushi01 | Student, Grade 10 | eNoter

Posted June 2, 2011 at 5:50 PM (Answer #2)

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xx

0 Mg 0 x S x

xx

 

Mg will donate 2 electrons to sulphur to attain stability or octet structure so it will become Mg(+2)

S will accept 2 electrons from Mg to attain stability or octet structure so it will become S(-2)

Mg(+2)   +   S(-2)  = MgS.

forms ionic bond

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hbridges95 | Student, Grade 9 | eNotes Newbie

Posted March 14, 2009 at 4:27 AM (Answer #3)

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Probably ionic.But im not sure

 

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revolution | College Teacher | Valedictorian

Posted February 23, 2010 at 10:43 PM (Answer #5)

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It is more probably an ionic bond, which each two losing or gaining two electrons to get a stable electronic configuration.

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irza | Student, Grade 10 | eNoter

Posted May 28, 2011 at 11:37 AM (Answer #6)

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It is an ionic bond because magnesium is a metal and sulfur is a non-metal.

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shizza123 | Student, Grade 10 | Valedictorian

Posted June 11, 2011 at 7:50 AM (Answer #7)

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write Mg and beside it, write S.

draw one dot at the top for one valence electron. draw one dot on the right side for two valence... and so forth...

then donate one electron from one atom to the other (using arrows), depending on which one needs it most.

remember, when you make dots, go in clockwise direction :)

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shizza123 | Student, Grade 10 | Valedictorian

Posted June 11, 2011 at 7:58 AM (Answer #8)

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Here's something new I found for you...

Mg2+    -Mg plus no dots (since it has lost its two valence electrons)

S2-       -S plus 8 dots (since it has six valence electrons, plus two more it got from Mg)

IONIC BOND because a metal is donating electrons to a non metal.


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donleonardo | Honors

Posted June 20, 2011 at 3:02 PM (Answer #9)

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The Lewis dot structure for MgS (Magnesium sulfide) is difficult to draw in this format.

Iprefer to use a small circle for the metals and a dot for the nonmetal.  This way you can 'see'(distinguish) each atoms electrons

Start by writing the symbol Mg and place a small circle at each the upper right and lower right sides(2 and 4 o'clock).  Then to the right of Mg (give yourself a little space) write the symbol S. Starting at 2 o'clock place a dot,  then place one at 4, 8, and 10 o'clock, respectively).  You have now accounted for 4 of sulfurs 6 valence electrons.  Now place a dot next to the ones at 2 and 4 o'clock.

o----.     :

Mg        S

o----.     :

The dashed line represents the bonding electron pairs.

Now for the QUESTION - is this an ionic bond.

First check the electronegativity(the desire to give up or take electrons) for each element.  Magnesium (Mg) has an electronegativity of 1.29 and sulfur's is 2.46.  Take the difference in electronegativity (2.46-1.29) 1.17.  This then will tell you the type bond (covalent - sharing) (polar-covalent - uneven sharing) or (ionic -little to no sharing of electrons).  It is generally accepted that if the difference in elecrtonegativities is GREATER than 1.7 the bond is ionic (>50% ionic).  Between 0.7 and 1.7 polar covalent (eg. water H2O ~1.1) and less than 0.7 covalent (eg. Nickel(II)sulfide NiS ~0.6,   H2 difference = 0 PURE covalent bond)

Thus NO compound is purely ionic.

Difference in electornegativity

0-----------0.7---------------------------1.7---------------------4.0

covalent---------polar covalent----------------  ionic------  XXX

Hope this helped clear up covalent vs ionic bonds a little.

 

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shik6991 | Student, Grade 10 | eNoter

Posted July 21, 2011 at 1:23 AM (Answer #11)

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it will be an ionic bond

 

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shaznl1 | High School Teacher | Salutatorian

Posted July 31, 2011 at 9:55 AM (Answer #12)

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It s definitely an ionic bond. MgS(magnesium sulfide) is a very useful compound in chemistry. Mg has 2 valance electrons in its outermost level, and sulfur has 6 valance electrons. Mg's stable ion is the Mg2+ ion, which is a positive ion. Sulfur's stable ion is S2- ion, which is a negative ion. By the fundamental law of physics and chemistry, positive and negative attract each other, creating bonds. The bond created by positive and negative ion attracted to each other is an ionic bond.

Besides, ionic bond is ALWAYS a metal + a nonmetal. covalent bonds are always 2 nonmetals. In this case, sulfur is a nonmetal, and Mg is a metal. Therefore, they form an ionic bond.

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shivankshekhar | Student, Grade 10 | Honors

Posted September 4, 2011 at 1:00 AM (Answer #13)

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atomic number of mg is 12. therefore it's conf. is 2,8,2.Hence it has 2 e- in it's outermost orbit.S has Z=16, hence it's electronic conf. is 2,8,6. Hence it has 6 e- in it's outermost orbit.

..                                                                                     Mg:      : S :

Mg will give 2 e- and becomes stable &  S accepts 2e- to become stable.Thus,                                                                                                    ..                                                                                   Mg       : :S:

 

 

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ella301 | Student, Grade 10 | Salutatorian

Posted September 22, 2011 at 8:53 AM (Answer #14)

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xx

0 Mg 0 x S x

xx

 

Mg will donate 2 electrons to sulphur to attain stability or octet structure so it will become Mg(+2)

S will accept 2 electrons from Mg to attain stability or octet structure so it will become S(-2)

Mg(+2) + S(-2) = MgS.

forms ionic bond

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go4knowledge2 | Student, Grade 11 | eNoter

Posted October 7, 2011 at 9:29 AM (Answer #15)

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In this case, Mg will lose 2electrons.

And S will gain the two electrons.

Mg(+2)+S(-2) = MgS

And the bond formed between Mg and S will be ionic.

Electron dot structures are:

..

MG

..

S:

..

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shedrick333 | Middle School Teacher | (Level 1) Adjunct Educator

Posted October 29, 2011 at 7:27 AM (Answer #16)

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This is an ionic bond.  Magnesium, found in group 2, has 2 valence electrons and needs to release them to become stable.  Sulfur, found in group 16, has 6 valence electrons and takes two from magnesium to become stable.

I like to say, "Eight is Great," to help students remember that atoms need eight electrons in the valance (outer energy level) to be stable.

It could be shown as [Mg 2+]  [S 2-].  The Mg would have no dots, and the S would have 8 around it, two on each side, top, and bottom.  The dots would be drawn inside the brackets  around the symbols.  The 2+ and 2- should be smaller and towards the top.

Mg becomes more positive and the S becomes more negative because electrons are negatively charged.

 

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Jyotsana | Student, Grade 10 | Valedictorian

Posted April 19, 2014 at 11:06 PM (Answer #18)

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Mg Ionic Covalent- 2ve

S   Molecular Covalent -6ve

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abhinay | Student, Grade 10 | eNotes Newbie

Posted June 7, 2011 at 3:18 AM (Answer #17)

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its an ionic bond

 

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