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tamaranim1 [39]
3 years ago
14

Type in the correct values to correctly represent the valence electron configuration of oxygen: AsB2p

Chemistry
2 answers:
lesya [120]3 years ago
7 0

Answer:

A = 2s²

B = 2p⁴

or 2s² 2p⁴

Explanation:

Oxygen:

It is the eighth element of periodic table. It is present in group sixteen and second period of periodic table. It has six valance electrons. It is also called chalcogen because it is ore forming element. its atomic number is 8.

Electronic configuration:

O₈ = 1s² 2s² 2p⁴

The two electrons in 1s shell represent the core electrons while the six electrons in second shell are valance electrons.

Valance shell electronic configuration :

2s² 2p⁴

Naddika [18.5K]3 years ago
4 0

Answer:

A = 1, B = 2, C =2

Explanation:

Oxygen has an electronic configuration of 1s²2s²2p². It is the first element located in group iv. The valence electrons corresponds with the fact that it has two electrons on its outer orbital which is p-orbtial and would require 2 electrons to be stable and form a compound. It can do this with itself by forming a dimer O-O bonds or with another element by accepting electron.

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Which of the following is not a reason that power plants are unable to achieve 100 percent efficiency?
koban [17]
The answer is B. Power plants are efficient though not all heat is managed to be converted.

Answer:

\boxed
{\bf~Not~all~energy~is~converted~heat~from~chemical~reactions...}


Hope it helped,

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7 0
3 years ago
Read 2 more answers
What did the Great Compromise and the Three-Fifths Compromise decide?
MissTica

Answer:

The Great Compromise settled matters of representation in the federal government. The Three-Fifths Compromise settled matters of representation when it came to the enslaved population of southern states and the importation of enslaved Africans.

Explanation:

7 0
3 years ago
Explain what a chemical reaction is and moles
Delvig [45]

Answer:

A process during which chemical bonds between atoms are broken and new ones are formed, producing one or more substances.

Moles are the amount of substance that contains as many particles.

Explanation:

A chemical reaction is when a chemical change occurs for example when a nail comes into contact with air and is then exposed to air it begins to rust. It forms a red-brown substance which changes the chemical composition of the original compound.

Examples of chemical reactions:

Combustion

Oxidation (rusting)

Cooking an egg

Photosynthesis

Digestion

Fireworks

Paper Burnin

The mole is the amount of substance that contains as many particles (molecules, ions or atoms) as there are in 12g of carbon.

1 mol is the amount of substance that contains the same number of particles as there are atoms in 12.0 g of carbon-12 and that number is referred to as Avogardo's constant (6.022 x 10^{23}).

3 0
2 years ago
What is the percentage of the actual yield of the reaction of 2.5 mol of Fe(NO3),
Sliva [168]

Answer:

Percent yield = 87.5%

Explanation:

Given data:

Number of moles of Fe(NO₃)₃ = 2.5 mol

Number of moles of Na₂CO₃ = 3.6 mol

Actual yield of NaNO₃ = 6.3 mol

Percent yield of NaNO₃ = ?

Solution:

Chemical equation:

2Fe(NO₃)₃ + 3Na₂CO₃        →     Fe₂(CO₃)₃ + 6NaNO₃

now we will compare the moles of both reactant with NaNO₃.

                   Fe(NO₃)₃          :              NaNO₃

                       2                   :                  6

                     2.5                  :            6/2×2.5 = 7.5

                  Na₂CO₃             :              NaNO₃

                       3                   :                  6

                     3.6                  :            6/3×3.6 = 7.2

Theoretical yield of NaNO₃ is 7.2 mol.

Percent yield:

Percent yield = actual yield / theoretical yield ×100

Percent yield = 6.3 mol / 7.2mol ×100

Percent yield = 87.5%

5 0
3 years ago
Which compound contains a triple bond?
Igoryamba
There are many compounds which contain triple bonds between two atoms. Few of the are as follow,

Nitrogen Molecule:

                           N₂   or   :N≡N:

Cyanide Ion:

                          CN⁻   or    [:C≡N:]⁻

Alkynes:
                          R-C≡C-R

Carbon Monoxide:

                          CO    or    :C≡O:

Among given compounds Alkynes belong to a class of unsaturated hydrocarbons. The carbon atom in alkyne is sp hybridized. These unsaturated hydrocarbons have their own characteristic chemical properties. 
6 0
3 years ago
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