CHEMISTRY MIDDLE SCHOOL

What hypotheses could you propose about the relationship between the position of a type of atom in a molecule and the number of bonds that the atom forms?

Answers

Answer 1
Answer:

The answer is: the atom with more valence electrons are in the middle of a molecule and it form more bonds.

For example, molecule hydrogen cyanide (HCN).

Lewis structure for hydrogen cyanide is H:C:::N:

Hydrogen has valence one (I), it means it has one single bond and electron configuration like closest noble gas helium.

Carbon has valence four (IV), it has four bonds (one with hydrogen and three with nitrogen) and full octet.

Nitron has valence three (III), it has full octet and electron configuration like noble gas neon (Ne).

Hydrogen cyanide has linear shape (the bond angles of 180 degrees).
Answer 2
Answer: It depends entirely upon the number of electrons in the valence electrons. There is no correlation between the position in the molecule and the number of bonds the atom forms.

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Fill in the following information for the element *if your good at these pls go to my profile and answer more related questions.*

Answers

Answer:

element name: Europium

Period: 6

Group: 9

Family: rare earth family of metals

Explanation:

Answer:

Period: 6 block

Group: f block

Family: Lanthanides

A sudden violent flood that occurs within a few hours or even minutes of a storm is called?Answer ASAP plz

Answers

A flash flood.

Hope this helps!
Flash Flood I believe

A scientist formed a theory based on an experiment he conducted. Many years later, researchers studied his experiment to see if there were any possible sources of error. Should the researchers do this?

Answers

The researches could review his experiments and all of his theories to detect any possible flaws. 

HClO4+P4O10=H3PO4+Cl2O7 how do you balance this?

Answers

12 HClO₄ + 1 P₄O₁₀ → 4 H₃PO₄ + 6 Cl₂O₇

Explanation

Balance by the conservation of atoms.

Assign coefficient 1 to the species with the largest number of elements and atoms. H₃PO₄ contains three elements. Each of its molecule contains eight atoms, that's two more than the six atoms in a HClO₄ molecule. Start by assigning H₃PO₄ a coefficient of 1.

? HClO₄ + ? P₄O₁₀ → 1 H₃PO₄ + ? Cl₂O₇

There are now three H atoms, one P atom on the product side. H₃PO₄ is the only product that contains H and P atoms. As a result, there should be the same number of H and P atoms on the reactant side.

  • Among all reactants, only HClO₄ contains H atoms. Each HClO₄ molecule contains one H atom. Three H atoms correspond to three HClO₄ molecule.
  • Among all reactants, only P₄O₁₀ contains P atoms. Each P₄O₁₀ molecule contains four P atoms. One P atom corresponds to 1/4 of a P₄O₁₀ molecule.

Thus

3 HClO₄ + 1/4 P₄O₁₀ → 1 H₃PO₄ + ? Cl₂O₇

There are three Cl atoms in three HClO₄ molecules. HClO₄ is the only species that contains Cl among all reactants. There are three Cl atoms on the reactant side and shall be the same number of Cl atoms on the product side.

  • Cl₂O₇ is the only molecule that contains Cl among the products. Each Cl₂O₇ molecule contains two Cl atoms. Three Cl atoms will correspond to 3/2 Cl₂O₇ molecules.

3 HClO₄ + 1/4 P₄O₁₀ → 1 H₃PO₄ + 3/2 Cl₂O₇

Multiply both sides by the least common multiple of the denominators to eliminate the fraction. Theleast common multiple in this case is four.  

12 HClO₄ + 1 P₄O₁₀ → 4 H₃PO₄ + 6 Cl₂O₇

How many moles are in 2.0 grams of Na?

Answers

Answer:

46

Explanation:

Sodium metal has a molar mass of  

22.99

Why are fungi more closely related to animals than they are to plants? A. animals and fungi are both autotrophs, while plants are heterotrophs
B. animals and fungi are both heterotrophs, while fungi are autotrophs
C. fungi and animals are both heterotrophs, while plants are autotrophs
D. fungi and plants are both autotrophs, while animals are heterotrophs

Answers

the answer maybe B or A
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