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Oksana_A [137]
3 years ago
9

Plz answer ASAP!

Chemistry
2 answers:
UkoKoshka [18]3 years ago
8 0

Answer:

The correct answer is d.

Explanation:

A covalent bond between two atoms occurs when they join together to reach the stable octet, sharing electrons located at the last level. The electronegativity difference between the atoms must be less than 1.7 so that an ionic-type bond does not occur.

The two atoms share one or more pairs of electrons in a new type of orbital called molecular. Covalent bonds occur between atoms of the same non-metal element, between different non-metal atoms, and between a non-metal atom and the hydrogen atom.

Have a nice day!

Alchen [17]3 years ago
4 0
What types of atoms typically form covalent bonds?

The correct answer:

d) Nonmetals with nonmetals, because their difference in electronegativity is below 1.7.

En example to explain:
An example of a covalent bonding: HCl -> 2 nonmentals
-> a difference in electronegativity less than 1.7:

EN(Cl) = 3.0 and EN (H) = 2.1 (you can search these values in a periodic table)
/\EN = 3.0 - 2.1 = 0.9

0.9 < 1.7

I hope this helped you out!
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Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider a mixture of six nitrogen molecules and six hydrogen molec
Nezavi [6.7K]

Answer:

a)  No molecules of hydrogen

b) four molecules of ammonia

c) four left molecules of nitrogen.

Explanation:

The balanced reaction between nitrogen and hydrogen molecules to give ammonia molecules is:

N_{2}(g)+3H_{2}(g) -->2NH_{3}

Thus one molecule of nitrogen will react with three molecules of hydrogen to give two molecules of ammonia.

We have six molecules of each nitrogen and hydrogen in the closed container and they undergo complete reaction it means the limiting reagent is hydrogen. For six molecules of nitrogen, eighteen molecules of hydrogen will be required.

So six molecules of hydrogen will react with two molecules of nitrogen to give four molecules of ammonia.

The product mixture will have

a) No molecules of hydrogen

b) four molecules of ammonia

c) four left molecules of nitrogen.

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Explanation:

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