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defon
4 years ago
11

When an alkane reacts with an element from group 7a, the reaction is referred to as?

Chemistry
2 answers:
Mila [183]4 years ago
8 0

Answer:

Halogenation.

Explanation:

Hello,

In this case, we must remember that group VIIA elements are known as halogens which include F, Cl, Br, I and At. Now, when an alkane reacts with the diatomic form of one of those halogen a haloganation chemical reaction occurs forming an alkyl halide and a hydrogen halide. For instance, for ethane, if it reacts with iodine, ethyl iodide and hydrogen iodide are yielded based on the given example:

CH_3-CH_3+I_2\rightarrow CH_3-CH_2-I+HI

Best regards

Elena-2011 [213]4 years ago
7 0
Alkanes are saturated hydrocarbon, that is they contain hydrogen and carbon without a double or triple bond between the carbon atoms, e.g. ethane, propane. Group 7a in the periodic table are called halogens e.g chlorine, bromine. Alkanes react with halogens in a reaction called substitution, where halogens replace hydrogen atoms in alkanes.
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Ionic compounds form between two metals true
Viefleur [7K]

Answer (TL;DR):

False, ionic compounds form between a metal and a nonmetal. This is because metals are looking to lose electrons to get a full outer shell while nonmetals are looking to gain electrons to get a full outer shell.

Explanation:

Atoms have a full outer shell when their outermost shell holds the maximum number of electrons. For example, if the outermost shell is the first shell of the atom, it can hold up to 2 atoms. When this shell holds 2 atoms, it is considered full. If the outermost shell is the second shell of the atom, it can hold up to 8 atoms. When this shell holds 8 atoms, it is considered full. This can also be referred to as an atom "gaining a complete octet." The reason that atoms want a complete octet is to become stable and less reactive.

Let's say an atom with 3 shells has only 1 electron on the third shell. It doesn't have a complete octet and it wants to gain one. The third shell can hold up to 8 electrons. So, to gain a complete octet, the atom can either gain 7 electrons or just lose the 1 that it already has, which is the easier option. This is the case with metals and the opposite goes for nonmetals.

Because metals want to lose electrons and nonmetals want to gain electrons, they form compounds with each other.

I hope this helps!

6 0
3 years ago
Fill in the blank: After a chemical reaction, the atoms of the reactant _____ to form new products.
Wewaii [24]
The atoms of the reactant rearrange to form new products.
8 0
3 years ago
Calculate the root mean square velocity of F2,Cl2, and Br2 at 304 K .
Artist 52 [7]
<span>The root mean square velocity of gas molecules as a function of temperature is (M is molecular weight): 
v²rms = 3RT/M, 
and kinetic energy is given by: 
KE = ½Mv ² 
We can make the substitution: 
KE = ½M3RT/M, or 
KE = (3/2)RT. 
Notice the molecular weight variable is gone; that means the answer will be the same for F2, Cl2, and Br2: 
KE = (3/2) (8.314 J/K*mole) (290 K) = 3617 J/mole.</span>
5 0
3 years ago
When hydrogen peroxide (H2O2) is added to potassium iodide (KI) solution, the hydrogen peroxide decomposes into water (H2O) and
denis-greek [22]
The answer is D. A catalyst.
6 0
4 years ago
Read 2 more answers
Which of these atoms is the most electronegative?
Blababa [14]

The Chlorine and fluorine atoms are  the most electronegative.

So, option D and E is correct one.

The atom of a given chemical elements having tendency to attract bonded pair of electron toward itself is called electronegativity. The electronegativity of atoms is affected by both its atomic number and distance at which its valence electrons resides from the charged nucleus.

The electronegativity of the elements is increases on moving left to right in the period of periodic table while decreasing on moving top to bottom in the group of periodic table .

Example:

The elctronegativity of fluorine atom = 3.98

The elctronegativity of chlorine atom =3.16

The elctronegativity of carbon atom = 2.25

The elctronegativity of phosphorus atom = 2.19

The elctronegativity of silicon atom = 2.58

learn more about electronegativity

brainly.com/question/17762711

$#SPJ4

7 0
1 year ago
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