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worty [1.4K]
3 years ago
6

Help! help! plz Why do two H atams combine to Form the molecule H2 while He remains monotonic?​

Chemistry
1 answer:
Stells [14]3 years ago
8 0

How atoms interact with other atoms is largely dependant on the number of electrons on its outermost layer. The electrons on this layer are called valence electrons.

As you might know, atoms have their electrons arranged in layers/shells, starting at k, l m, n etc. Each layer has a maximum number of electrons it can accommodate, with the outermost one being the valence shell. The first layer (k) can accomodate 2 electrons, the second one (l) can accomodate 8, as can the third one (m) etc.

As a rule of thumb, most atoms don't like being alone. These atoms have a valence shell that isn't saturated. This is the case for hydrogen(1), with one free slot in its outter shell.

However, atoms like helium are a bit different. They are inert, and don't need to bond with other atoms. This is because their valence shell is saturated. In this case, helium saturated the k shell with 2 electrons. Helium in this form will not form bonds.

However, hydrogen is still out there looking for buddies. Hydrogen will bind with any other atom with a free electron. Being extremely common, it's likely that said atom will be another hydrogen.

However, another common example would be for 2 hydrogens to bond with one oxygen, forming h2O (oxygen can form 2 bonds)

Conclusion : helium is inert and will not interact with other atoms. Hydrogen is not, and thus needs to bond with other atoms.

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Consider the reaction below 2SO2(g) + O2(g) ⇌ 2SO3(g) At 1000 K the equilibrium pressures of the three gases in one mixture were
Vsevolod [243]

Answer:K_p for the reaction is 3.45

Explanation:

The balanced chemical reaction is:

          2SO_2(g)+O_2(g)\rightleftharpoons 2SO_3(g)                  

At eqm.   0.562 atm   0.101 atm    0.332 atm

As we are given that:

The expression of K_p for above equation follows:

K_p=\frac{(p_{SO_3})^2}{(p_{SO_2})^2\times p_{O_2}}

Putting values in above equation, we get:

K_p=\frac{(0.332)^2}{(0.562)^2\times 0.101}=3.45

The value of K_p for the reaction is 3.45

8 0
3 years ago
A mystery element contains 11 electrons. Which group of the periodic table will it belong to?
serious [3.7K]
There are 18 Elements in the fifth period.
7 0
3 years ago
which type of weather technology often carries cameras that can make images of Earth's surface clouds and snow cover?
elixir [45]
...a satellite!!!! that is one and maybe only answer
5 0
3 years ago
Which atom is most likely to accept electrons to form an ionic bond?
Alinara [238K]
Halogens (atoms with 7 valence electrons) and Hydrogen

or generally, atoms with their shells almost full
5 0
3 years ago
How many grams of potassium chloride are required to make 250 ml of a 0.75 m kcl solution?
DedPeter [7]

Answer:

The solution would need 13.9 g of KCl

Explanation:

0.75 m, means molal concentration

0.75 moles in 1 kg of solvent.

Let's think as an aqueous solution.

250 mL = 250 g, cause water density (1g/mL)

1000 g have 0.75 moles of solute

250 g will have (0.75 . 250)/1000 = 0.1875 moles of KCl

Let's convert that moles in mass (mol . molar mass)

0.1875 m . 74.55 g/m = 13.9 g

7 0
3 years ago
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