1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gemiola [76]
3 years ago
12

Why does the elements of group 17 appear as diatomic molecules?

Chemistry
1 answer:
julsineya [31]3 years ago
4 0

Answer:

To gain stability.

Explanation:

Atoms are stable when they have complete octet means they have 8 valance electrons.

The halogens elements are present  in group seventeen. All atoms of halogen elements have seven valance electrons. They need one more electron to complete the octet and get stable.

That's why all halogens atoms are very reactive because they react with other atoms complete the octet and present in the form of diatomic molecule.

The halogen atoms react with metals and form ionic compound.

For example:

Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion.  Both atoms are combine by electrostatic attraction.

You might be interested in
In this system, potential and kinetic energy are ________________ proportional.
brilliants [131]

Answer:

This question is incomplete

Explanation:

There are two major forms of energy; these are potential and kinetic energy. Kinetic energy is the energy present in moving options. Examples include mechanical and electrical energy.

The formula for kinetic energy is 1/2mv² where "m" is mass and "v" is velocity.

While potential energy is the energy present in stationary objects that can be put to use in future. Example includes a ball in its resting state. The formula for potential energy is "mgh" where "m" is mass, "g" is acceleration due to gravity and "h" is height

Considering the law of conservation of energy which states that energy can neither be created nor destroyed but can be transformed from one form to another. Looking at the example provided earlier for potential energy, a ball in its resting position (having a potential energy) when kicked will have a kinetic energy (which can be calculated with the formula provided earlier), hence

Total energy = potential energy (P.E) + kinetic energy (K.E)

This formula and the explanation above can be used to answer the completed question.

NOTE: There is no standard relationship between P.E and K.E. They could be directly or indirectly proportional depending on the circumstance.

5 0
3 years ago
A. True <br> b. False a chemical species is either an acid or a base, it cannot function as both
ivann1987 [24]
False They can function as both. An example is Aluminium Oxide. These kind of substances are called "Amphoteric", they can behave as both acids and bases.
3 0
3 years ago
hi, 100 points, , will also mark brainly-ist (what's the boiling point of water) ((you don't need to answer that))​
BaLLatris [955]

Answer:

212 degrees F, and 100 degrees C.

Explanation:

If the temperature is held constant (which requires some heat input, since evaporation cools things) the liquid will all evaporate. If the temperature is much above 212 F, the water will boil. That means that it wont just evaporate from the surface but will form vapor bubbles, which then grow, inside the liquid itself.   :)

6 0
3 years ago
A chemical equation is shown:
taurus [48]

 The number  of  oxygen atoms  are 6  atoms


  <u><em>Explanation</em></u>

According to the law of mass conservation the number of  reactant atoms   is equal to  number  of product atoms.

For  given equation  to  obey  the  law of mass  conservation  it need to be balanced as below

4 Al + 3 O₂ → 2 Al₂O₃

Al₂O₃  is the  product,therefore the number of oxygen atom

= coefficient  in front  of   Al₂O₃   ×  subscript  of O

=2 x 3  = 6 atoms

7 0
3 years ago
Read 2 more answers
What happens to wavelength as wave frequency increases?
KengaRu [80]

Answer:

As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer.

Explanation:

6 0
3 years ago
Other questions:
  • Which formula represents a hydronium ion?<br> (1) H3O+ (3) OH–<br> (2) NH4+ (4) HCO3–
    6·2 answers
  • An organism that regulates its body temperature using external heat sources is an example of
    11·2 answers
  • 12. Describe the results of a chemical change. List four<br> indicators of chemical change.
    6·1 answer
  • Which pair of elements is most likely to chemically combine and form ionic bonds, chlorine and chlorine or lithium and chlorine,
    14·1 answer
  • When two molecules of methanol (CH3OH) react with oxygen, they combine with three O2 molecules to form two CO2 molecules and fou
    10·1 answer
  • If there was an airplane that went 2,000 miles in 3.5 hours. Find the average speed
    14·1 answer
  • A very hot cube of copper metal (32.5 g) is submerged into 105.3 g of water at 15.4 0C and it reach a thermal equilibrium of 17.
    12·1 answer
  • Can u pls help me naming this: (IUPAC)
    5·1 answer
  • What is the answer please tell me
    7·1 answer
  • How do i find a ionic formula? <br><br>for example Ca2+ &amp; S2-​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!