What is 3 tenths+4tenths

List three important character of ionic compound

jok3333 [9.3K]

Answer:

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Science, Tech, Math › Science

Ionic Compound Properties, Explained

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Salt shaker, close-up

Maximilian Stock Ltd. / Getty Images

By Anne Marie Helmenstine, Ph.D.

Updated March 02, 2021

Ionic compounds contain ionic bonds. An ionic bond is formed when there is a large electronegativity difference between the elements participating in the bond. The greater the difference, the stronger the attraction between the positive ion (cation) and negative ion (anion).

Ionic Compound Properties

Ionic compounds form when atoms connect to one another by ionic bonds.

An ionic bond is the strongest type of chemical bond, which leads to characteristic properties.

One atom in the bond has a partial positive charge, while the other atom has a partial negative charge. This electronegativity difference makes the bond polar, so some compounds are polar.

But, polar compounds often dissolve in water. This makes ionic compounds good electrolytes.

Due to the strength of the ionic bond, ionic compounds have high melting and boiling points and high enthalpies of fusion and vaporization.

Properties Shared by Ionic Compounds

The properties of ionic compounds relate to how strongly the positive and negative ions attract each other in an ionic bond. Iconic compounds also exhibit the following properties:

They form crystals.

Ionic compounds form crystal lattices rather than amorphous solids. Although molecular compounds form crystals, they frequently take other forms plus molecular crystals typically are softer than ionic crystals. At an atomic level, an ionic crystal is a regular structure, with the cation and anion alternating with each other and forming a three-dimensional structure based largely on the smaller ion evenly filling in the gaps between the larger ion.

They have high melting points and high boiling points.High temperatures are required to overcome the attraction between the positive and negative ions in ionic compounds. Therefore, a lot of energy is required to melt ionic compounds or cause them to boil.

They have higher enthalpies of fusion and vaporization than molecular compounds.

Just as ionic compounds have high melting and boiling points, they usually have enthalpies of fusion and vaporization that can be 10 to 100 times higher than those of most molecular compounds. The enthalpy of fusion is the heat required melt a single mole of a solid under constant pressure. The enthalpy of vaporization is the heat required for vaporize one mole of a liquid compound under constant pressure.

They're hard and brittle.Ionic crystals are hard because the positive and negative ions are strongly attracted to each other and difficult to separate, however, when pressure is applied to an ionic crystal then ions of like charge may be forced closer to each other. The electrostatic repulsion can be enough to split the crystal, which is why ionic solids also are brittle.

8 0

3 years ago

Why doesn’t neon readily form an ionic bond?

Goryan [66]

By definition of noble gases, neon does not easily form an ionic bond because it belongs to the group of noble or inert gases, so its reactivity is practically nil.

<h3>Noble gases</h3>

Noble gases are not very reactive, that is, they practically do not form chemical compounds. This means that they do not react with other substances, nor do they even react between atoms of the same gas, as is the case with diatomic gases such as oxygen (O₂).

The chemical stability of the noble gases and therefore the absence of spontaneous evolution towards any other chemical form, implies that they are already in a state of maximum stability.

All chemical transformations involve valence electrons, they are involved in the process of covalent bond formation and the formation of ions. Therefore, the practically null reactivity of the noble gases is due to the fact that they have a complete valence shell, which gives them a low tendency to capture or release electrons.

Since the noble gases do not react with the other elements, they are also called inert gases.

Neon does not easily form an ionic bond because it belongs to the group of noble or inert gases, so its reactivity is practically nil.

Learn more about noble gases:

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6 0

3 years ago

Read 2 more answers

How much work is done by a 35-watt light bulb if it is on for 1,320 seconds?

OleMash [197]

Answer:

The 35-watt light bulb does a work of 46200 joules in 1320 seconds.

Explanation:

From Physics we remember the definition of work ( $W$ ), measured in joules, by the following integral equation:

$W = \int\limits_{0}^{t} {\dot W} \, dt$ (1)

Where $\dot W$ is the power, measured in watts.

If the power is stable in time, then the work can be calculated by the following algebraic equation:

$W = \dot{W}\cdot \Delta t$ (2)

If we know that $\dot W = 35\,W$ and $\Delta t = 1320\,s$ , then the work done by the 35-light bulb is:

$W = (35\,W)\cdot (1320\,s)$

$W = 46200\,J$

The 35-watt light bulb does a work of 46200 joules in 1320 seconds.

8 0

3 years ago

Calculate the wavelength of the photon emitted when an electron makes a transition from n=6 to n=3. You can make use of the foll

Angelina_Jolie [31]

<u>Answer:</u> The wavelength of light is $1.094\times 10^{-6}m$

<u>Explanation:</u>

To calculate the wavelength of light, we use Rydberg's Equation:

$\frac{1}{\lambda}=R_H\left(\frac{1}{n_f^2}-\frac{1}{n_i^2} \right )$

Where,

$\lambda$ = Wavelength of radiation

$R_H$ = Rydberg's Constant = $1.097\times 10^7m^{-1}$

$n_f$ = Final energy level = 3

$n_i$ = Initial energy level = 6

Putting the values in above equation, we get:

$\frac{1}{\lambda }=1.097\times 10^7m^{-1}\left(\frac{1}{3^2}-\frac{1}{6^2} \right )\\\\\lambda =\frac{1}{914617m^{-1}}=1.094\times 10^{-6}m$

Hence, the wavelength of light is $1.094\times 10^{-6}m$

6 0

4 years ago

A certain flexible weather balloon contains 3.5 L of helium gas. Initially, the balloon is in WP at 8500ft, where the temperatur

Advocard [28]

Answer:

$\large \boxed{\text{3.9 L}}$

Explanation:

We can use the Combined Gas Laws to solve this problem

$\dfrac{p_{1}V_{1} }{T_{1}} = \dfrac{p_{2}V_{2}}{T_{2}}$

Data

p₁ = 571.2 Torr; p₂ = 400 Torr

V₁ = 3.5 L; V₂ = ?

T₁ = 21.5 °C; T₂ = 6.8 °C

Calculations

(a) Convert the temperatures to kelvins

T₁ = (21.55 + 273.15) K = 294.70 K

T₂ = (6.8 + 273.15) K = 279.95 K

(b) Calculate the new volume

$\begin{array}{rcl}\dfrac{p_{1}V_{1} }{T_{1}} & = & \dfrac{p_{2}V_{2}}{T_{2}}\\\\\dfrac{\text{571.2 Torr $\times$ 3.5 L}}{\text{294.65 K}} & = & \dfrac{\text{400 Torr} \times V_{2}}{\text{279.95 K}}\\\\\text{6.78 L} & = & \text{1.429V}_{2}\\\\V_{2} & = & \textbf{4.7 L}\\\end{array}\\\text{The new volume of the balloon is $\large \boxed{\textbf{4.7 L}}$}$

3 0

3 years ago

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