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2 years ago

If an atom has 13 electrons how many electron shells does it have

Chemistry

1 answer:

svlad2 [7]2 years ago

4 0

Answer:

Explanation:

If an atom has 13 electrons then it belongs to p-block of periodic table.

s level can accommodate 2 electrons.

p level can accommodate 6 electrons.

13 means 1s2 2s2 2p6 3s2 3p1.

As you can see there totally 5 sub-shells.

Total number of shells are 3(1,2,3).

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Georgia [21]

Answer:

Elements

Explanation:

The elements which are represented by a single uppercase letter, or represented by an uppercase letter followed by a lowercase letter. This tells you the types of elements in the compound.

Elements are one of the simplest chemical substances that cannot be decomposed in a chemical reaction or by any chemical means. They are made up of small indivisible particles called atoms, all having the same number of protons.

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3 years ago

Help!!! I need ur help! If u help me I’m going to be so happy. The question is so tricky for me and I don’t know it. If u help m

Mekhanik [1.2K]

I take that the insects remain constant no matter what happens to the frogs (which the frogs eat presumably). So a constant food supply for the frogs is not the problem.

The line for the alligators increases over time. It their numbers increase, the frogs are in trouble. The alligators will pursue lunch with determined single mindedness and there are more of them around.

So the frogs should decrease. Their natural enemy is the alligator and alligators won't go after insects. It's not worth their time.

A is the only answer you can choose.

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3 years ago

Which one has the highest Hydrogen Bonding: 1. HF 2. HCL 3. H2O 4. NH3

sleet_krkn [62]

Answer:

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3 years ago

Read 2 more answers

He splitting of the uranium atom is an example of ________. the splitting of the uranium atom is an example of ________. radioac

telo118 [61]

The splitting of an atom is known as nuclear fission, in which a high-energy particle is introduced to a heavy atom to instigate the separation; heavy atoms are known to be naturally unstable due to their size, and a small catalyst is enough to tip the system in favor of splitting. The act of fission usually produces two daughter nuclei and some byproduct, such as an alpha or beta particle, etc.

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3 years ago

Potassium nitrate decomposes on heating, producing potassium oxide and gaseous nitrogen and oxygen:

ahrayia [7]

To produce 56.6 kg of oxygen, moles of KNO₃ = 142.915 kg

This is a stoichiometric kind of question where everything should be converted into moles in order to proceed on with the calculations.

First you find the number of moles of oxygen using the following formula:

Mole (mol) = Mass (g) / Molar Mass (g/mol)

For oxygen, the molar mass is 32g/mol.

Therefore the number of moles in 56.6 kg of oxygen is :

(56.6 × 1000)/32

= 1768.75

From the reaction equation, the ratio of $KNO_{3}$ to O2 is 4:5.

Thus the number of moles of $KNO_{3}$ is

1768.75 × 4/5

= 1415 mol.

If you are looking for the mass of $KNO_{3}$ needed then Mass (g)

= Mole (mol) × Molar Mass (g/mol),

1415 ×101 = 142,915g

= 142.915kg

What happens to potassium nitrate when heated?

When potassium nitrate is heated, it decomposes into potassium nitrite and oxygen. Write a balanced equation for this reaction and add the state symbols of the reactants and products.

Learn more about molar mass :

brainly.com/question/24236159

#SPJ4

4 0

2 years ago