Can any one help me in this q please?

Question

Some elements are unlikely to lose or gain electrons, but share electrons to form convent bonds. Which of the following elements is most likely to form covalent bonds.?

Answer 1

If you have ever looked at the Periodic Table of Elements, you will see that there are rows as well as columns. Generally, the rule is that as you move across a row from left to right, the elements become more electronegative. Electronegative means that the atom of a particular element wants to steal electrons for itself (it is "greedy" as far as taking electrons goes.) Elements like Nitrogen, Oxygen, Fluorine, Chlorine and Bromine tend to be the most electronegative. But there are also elements that are less electronegative, meaning that the don't want electrons as much (they tend to want to give up their electrons). Hydrogen is the least electronegative element,and, if you look at the Periodic Table, it is on the leftmost side. When you combine an element that really wants to give up its electrons (like Hydrogen) and an element that really wants to steal those electrons(like Chlorine) you get a "perfect match" in the sense that one element gives up an electron (or more), and the other takes it (or more). The combined compound made from Hydrogen and Chlorine, HCl, is Hydrochloric Acid in water. You may have heard of"Ionic" bonds.Ionic bonds are made up of elements that do not equally share electrons and tend to carry a charge (a positive charge for elements that give up their electrons and a negative one for those that take electrons.)

If two elements have equal electronegative values, they can form bonds with each other that are covalent because no one atom is "stronger"at stealing electrons. Imagine, for example, two Hydrogen atoms that want to bond with each other. Since neither is stronger at taking an electron from the other, they tend to share their combined two electrons equally. The same goes for Oxygen, Fluorine, and Chlorine. Notice here that although Oxygen,Fluorine and Chlorine will tend to form an Ionic bond with an element that has much lower electronegative value, they will form covalent bonds with their own element because two atoms of the same element are equally electronegative. In addition, these compounds, like O-O (O2) do not carry a net charge because the charge is equally divided between the two atoms (it doesn't reside on one atom alone, like in H-Cl).

Sometimes it is possible for a covalent bond to be formed between elements that aren't the same, but have very similar electronegative values. Methane (C bonded to four Hydrogen atoms, CH4) is covalent because even though Carbon is slightly more electronegative than Hydrogen, the difference is small and therefore the electrons are shared almost equally.

Answer 2

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Answer 3

you need to provide the choices, but since ths is elementary i would guess carbon

Answer 4

May i ask how oid you are?
email anser to [e-mail]

Answer 5

It would help if you listed the choices.

Answer 6

When you say the following---somehow they didn't get listed.

Answer 7

i m not einstein baby