What is Ionization Energy?

Chemistry

2 answers:

scoundrel [369]3 years ago

7 0

Answer:

This is the energy required to remove a valence electron from an atom of the element to form an ion.Generally,there is a tendency for ionization energies to increase across a period and decrease down a group....

NARA [144]3 years ago

4 0

Answer:

Ionization energy is a measure of the difficulty involved in removing an electron from an atom or ion or the tendency of an atom or ion to surrender an electron.

Explanation:

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A wave has 9.2 x 10-22 ) of energy. What is its wavelength?

blagie [28]

Answer:

$\lambda=2.2x10^{-4}m$

Explanation:

Hello!

In this case, since the relationship between energy and wavelength is defined via the speed of light and the Planck's constant as shown below:

$e=\frac{c*h}{\lambda}$

Since c stands for the speed of light and h for the so-called Planck's constant, we can compute the wavelength as follows:

$\lambda=\frac{c*h}{e}=\frac{3.0x10^8m/s*6.626x10^{-34}J*s}{9.2x10^{-22}J}\\\\\lambda=2.2x10^{-4}m$

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3 years ago

Define - Solute.....

34kurt

The substances that dissolves in water are called solute.

6 0

3 years ago

In a particular reaction, 53.8 g of liquid silicon tetrachloride is added to 65.0 g of solid magnesium to produce solid magnesiu

kotykmax [81]

Answer: Mg is the excess reactant for the forward reaction.

Explanation: It is a stoichiometry problem and solved with the help of given grams and using balanced equation. Grams of both the reactants are converted to moles and divided by their coefficients. The excess reactant is the one for which we get the highest number on doing above steps.

The balanced equation is:

$SiCl_4(l)+2Mg(s)\rightarrow 2MgCl_2(s)+Si(s)$

Molar mass of silicon tetra chloride is 169.9 gram per mol and the molar mass of Mg is 24.3 gram per mol.

$53.8gSiCl_4(\frac{1mol}{169.9g})$

= $0.317molSiCl_4$

$65.0gMg(\frac{1mol}{24.3g})$

= 2.67 mol Mg

From balanced equation, the coefficient of silicon tetra chloride is 1 and that of Mg is 2. So, we will divide the moles of silicon tetra chloride by 1 and that of Mg by 2 and see which one gives highest number.

For silicon tetra chloride, $\frac{0.317}{1}$ = 0.317