All categories

2 years ago

Someone explain it plz

Chemistry

2 answers:

KIM [24]2 years ago

4 0

Two hydroxide ions means two OH^- ions .
The valency of reactants must be 2

Only possible with alkaline earth metals

Let's see an example

$\\ \sf\longmapsto X(OH)_2$

X belongs to group || i.e alkaline earth metals

The elements are

Magnesium (Mg)
Calcium (Ca)
Beryllium(Be)
Scandium(Sc)
Barium (Ba)
Renedium (Rn)

Option C is correct

docker41 [41]2 years ago

3 0

$\rule{300pt}{1000000pt}$

You might be interested in

Molecules are the smallest units of matter with the characteristic properties of a substance.

Vilka [71]

False, Atoms are the smallest units of matter that display both the chemical and physical properties of it, based on the structure of the atom.

3 0

4 years ago

Heat _____.

makvit [3.9K]

A:Is a measure of energy

7 0

3 years ago

Read 2 more answers

Calculate the energy, in joules, required to ionize a hydrogen atom when its electron is initially in the n =2 energy level. The

qaws [65]

Answer:

$E_{ionization}=5.45\times 10^{-19}\ J$

Explanation:

$E_n=-2.18\times 10^{-18}\times \frac{1}{n^2}\ Joules$

For transitions:

$Energy\ Difference,\ \Delta E= E_f-E_i =-2.18\times 10^{-18}(\frac{1}{n_f^2}-\frac{1}{n_i^2})\ J=2.18\times 10^{-18}(\frac{1}{n_i^2} - \dfrac{1}{n_f^2})\ J$

$\Delta E=2.18\times 10^{-18}(\frac{1}{n_i^2} - \dfrac{1}{n_f^2})\ J$

So, $n_i=2$ and $n_f=\infty$ (As the hydrogen has to ionize)

Thus,

$\Delta E=2.18\times 10^{-18}(\frac{1}{2^2} - \dfrac{1}{{\infty}^2})\ J$

$\Delta E=2.18\times 10^{-18}(\frac{1}{2^2})\ J$

$E_{ionization}=5.45\times 10^{-19}\ J$

4 0

3 years ago

Which development was a direct result of the

gladu [14]

"(2) increase in suburbanization" was a direct result of the <span>baby boom that followed World War II, but of course there were other factors that resulted as well. </span>

3 0

3 years ago

Elements in the same group have _____. the same number of electron shells the same atomic number similar chemical properties the

Bezzdna [24]

They have similar valence electrons and properties

6 0

3 years ago

Read 2 more answers

Someone explain it plz ​

Someone explain it plz