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marusya05 [52]
3 years ago
6

Why do atoms share electrons in covalent bonds?

Chemistry
2 answers:
vladimir2022 [97]3 years ago
7 0
To fill the other element's shell.
Mrac [35]3 years ago
4 0

Answer:

<em>Atoms share electrons</em> in <em>covalent bonds</em> because in this way both atoms attain the more stable configuration of a noble gas (complete valence shell).


Explanation:

Covalents bonds are the chemical bonds that result when <em>two atoms share </em>the <em>electrons</em> of the valence shell (the outermost shell of the atoms).


The shared electrons may be count as belonging to the two atoms that form the bond, and so both atoms will gain the electrons that permit them to complete the 8 electrons in their outermost shell, which is the most stable configuration of the noble gases (2 in the special case of hydrogen and helium). This is the so called octet rule.


The covalent bonds are possible between elements that are close in the periodic table, meaning that their electronegativitiies are similar, and are typical of non-metal elements.


When two or more atoms are bonded by covalent bonds they form a molecule. Some examples of molecules formed by pure covalent bonds are: diatomic hydrogen, diatomic chlorine, and diatomic sulfur.


Since one atom of chlorine has 7 valence electrons it needs one additional electron to complete the 8 electrons (octet rule). Hence, two atomos of chlorine  may share one electron each, and so both atoms will count 8 electrons in the outermost shell, gaining stabilization both.

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In the activity series, any metal on the list can be oxidized by the ions of elements_______it.
Aleonysh [2.5K]

Answer:

Below

Nitric acid

Lead

Sodium nitrate

Explanation:

The activity series is an arrangement of metals in order of decreasing reactivity. Metals that are higher up in the series displace metals that are lower in the series from dilute solutions. Hence, when the ion of a metal that is lower in the series reacts with a metal that is higher up in the series, the latter is oxidized.

Dilute acids dissolve metals above hydrogen in the activity series such as as zinc and lead. Platinum is much lower than sodium in the activity series hence platinum does not react with sodium nitrate.

3 0
2 years ago
How many secondary (2°) carbons are found in 5-ethyl-3,3,4-trimethylheptane??
Gelneren [198K]
5-Ethyl-3,3,4-trimethylheptane has 3 secondary carbon. A primary carbon written as 1° is a carbon that has one carbon atom attached to it. A secondary carbon written as 2° is a carbon attached to two other carbons, while a tertiary carbon written as 3° is a carbon attached to three other carbons. 
6 0
3 years ago
Read 2 more answers
How many atoms are in 0.500mol of calcium?
creativ13 [48]

Answer:

3.01×10²³ atoms of calcium

Explanation:

number of moles = number of atoms/Avogadro's constant

n = N/NA

N = n×NA = 0.500 mol×6.02×10²³ mol^-1

N = 3.01×10²³ atoms of calcium

3 0
3 years ago
At a constant pressure and amount of gas, how are temperature and volume related?
RSB [31]
The volume is directly proportional to the absolute temperature so the answer is A.
7 0
3 years ago
Based on the current atomic theory most chemical reaction take place as a result of the interactions of which sub- atomic partic
icang [17]
Electrons, everything is pretty much based around the likeliness of electrons to be swapped or shared between atoms
6 0
2 years ago
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