Which element or ion listed below has the electron configuration 1s22s22p6?

1 answer:

7 0

Count up the number of electrons in each orbital. theres ten electrons which means it has 10 protons. the element would be neon

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The chemical equation provided shows iron rusting to form iron oxide. Use the drop-down menu to choose the coefficients that wil

olchik [2.2K]

4Fe + 3O2 → 2Fe2O3 <or> The chemical formula for rust is Fe2O3. Rust is formed when iron reacts with oxygen in moist air. The following chemical equation represents the reaction: 4Fe + 3O2 → 2Fe2O3. Water is necessary for the oxidation reaction to occur and to facilitate transport of the electrons.

3 0

3 years ago

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The range in size of most atomic radii is approximately _____.

Mashutka [201]

The range in size of most atomic radii is approximately <span>5 × 10−21 m to 2 × 10−20 m. The rest of the choices do not answer the question above.</span>

8 0

3 years ago

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Earthquakes can happen at which type of plate boundaries? (Select ALL that apply)

Llana [10]

Answer:

convergent plates

Explanation:

5 0

3 years ago

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How many molecules are in 165 g of carbon dioxide?

devlian [24]

The molar mass of CO2 is 44 grams per mole.

165 grams / 44 grams per mole of CO2 = 3.75 moles CO2

Using Avogadro’s law where 1 mole of substance equals 6.023 x 10^23 molecules

3.75 moles CO2 (6.023 x 10^23 molecules /mole) = 2.26 x 10^24 molecules CO2

3 0

3 years ago

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The weight of the body in the air is .... the weight of the submerged body

stira [4]

Answer:

the correct answer is option 'b': More than

Explanation:

The 2 situations are represented in the attached figures below

When an object is placed in air it is acted upon by force of gravity of earth which is measured as weight of the object.

While as when any object is submerged partially or completely in any fluid the fluid exerts a force in upward direction and this force is known as force of buoyancy and it's magnitude is given by Archimedes law as equal to the weight of the fluid that the body displaces, hence the effective force in the downward direction direction thus the apparent weight of the object in water decreases.

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3 years ago