How many electrons doeszinc (zn) have?
825251
Zinc has an atomic number of 30, so its default number of electrons is 30.\n\nHowever, 30 electrons isn't the most stable thing! The oxidation state of zinc is 2+, which means that it likes to have two less electrons than it's supposed to.\n\nIn summary:\nZn on its own has 30 electrons\nZn in an ionic bond has 30-2 = 28 electrons
711569
If the ligands lie in the x-y plane, then the d-orbitals on the central atom that have all their electron density *out* of this plane will have the lowest energies.  These are the d-xz and d-yz orbitals. \n\nThe d-z^2 orbital has its density mostly out of the x-y plane, but there is a ring of electron density in the x-y plane, so this orbital will have a somewhat higher energy than the d-xz and d-yz orbitals.\n\nThe d-xy and d-(x^2-y^2) orbitals have their electron density concentrated in the x-y plane so their energies will be the highest.  They have the same energy.\n\nSummary, highest energy at the top:\n\nd-xy, x-(x^2-y^2)\nd-z^2\nd-xz, d-yz
850100
I'll do one for you and then you can try the rest.\n\nMagnesium has 12 electrons, so follow your filling order. Each s orbital holds to electrons and each p orbital holds 6, so its:\n\n1s2 2s2 2p6 3s2\n\nIt has 2 electrons in its outer shell so to have a full outer shell it will lose 2 therefore the common ion It forms is Mg2+
964894
IF U ARRANGE THE IONS IN ORDER OF increasing oxidation potentials then it's first Mg+2 , Zn+2, Cu+2\nso in a soln of these 3 ions Cu ions have highest reduction potential i.e.\nhigh tendency to accept e~ (to get reduced)\nso Cu will get first discharged & not Mg\nif Cu ions get exhausted then Zn will get deposited then Mg
36855
This element is Barium, Ba.  It has 56 electrons.\n1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2
811889
No concrete way to work it out. Groups one and two take positive charges equal to their group number (Mg2+, Li1+ etc). Groups 3, 4, 5, 6 and 7 ionise to a negative charge of 8 minus their group number (Cl1-, O2- etc), though 3, 4, and 5 tend to resist ionisation and are much more commonly found bonded covalently. The Transition elements ion charges are virtually impossible to predict without an extensive knowledge of d orbitals etc..
927770
1. NaCN\n2. NO2\n3. CuCl2\n4. NaC2H3O2 \n5. F2\n6. bonding involves transfer of electrons between atoms
1026083
First of all, there is no ZnCl, it is ZnCl2, and there is no NaS, it is Na2S.  ZnCl2 + Na2S would produce ZnS, but ZnCl and NaS do not exist.
960765
to attain an octet electron config.\n\nzinc has 10 electrons in its valence shell. it gives up 2 when it ionises so it can form the magic 8 that is stable. fyi, many atoms in the the table strive to attain this 8, and this principle drives the understanding of many compounds formed from the elements.
879268
Zinc is by far the best element. I also like plutonium.  It's just fun to say. "Plutonium."
879225
625g ZnS x 1mol ZnS/97g ZnS x 1mol Zn(NO3)2/1mol ZnS x 189g Zn(NO3)2/1mol Zn(NO3)2 x 100/85 = 1433g Zn(NO3)2\n\nZn=65 S=32 NO3=62
1090457
a the number of outer electron that will bond with other atoms to fill thei valence shells
713038
the other product is zinc chloride.\nand the reaction is single replacement.
213411
Atomic Number 3\nhttp://www.jergym.hiedu.cz/~canovm/vyhledav/varianty/litva.gif
1086041
all the information you need is in the handy periodic table.   First, think about the charges of the molecules....\n\n In the molecule CuSO4, copper has two electrons to give.  The SO4 molecule wants TWO more electrons to acheive noble gas configuration (a stable electron state).   This appears to be a match in heaven.  \n\nWell all is fine until Zinc comes along.  If you look at the periodic table, Zinc is just to the right of copper.  It too has 2 electrons to donate......but, it is more electronegative than copper. (remember, electronegativity  is the lowest in the bottom left corner of the table(Fr) and increases on  a diagonal path  with F being the most electronegarive.)  \n\nSince Zinc is more reactive than Copper,  a replacement reaction occurs.  Zinc bumps Copper off of the SO4 molucule.  Zinc can be whitiish to yellowish in solution.  As all the Zinc is coming off the rod, it bumps the copper off the SO4 and also disperses the colour of the copper.  If you had one drop of blue dye (the copper), but added a cup of milk. ( the Zinc)...... you would barely see the blue color.
753355
125.6\n\nhttp://www.webelements.com/webelements/elements/text/Ag/ionz.html
261927
Actually I think there would be three dots:\n                    .B: \nRemember that Boron has three electrons in the second energy level and five total.\n\nThe sites below should have some good answers for your future Chemistry related questions.\n\nGood luck on your homework,\nArmus