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BigorU [14]
4 years ago
14

What atomic structure has 56 protons and 84 neutrons?

Chemistry
1 answer:
Nikitich [7]4 years ago
3 0
Name:<span> Polonium </span>
Symbol:<span> Po </span>
Atomic Number:<span> 84 </span>
Atomic Mass:<span> (209.0) amu </span>
Melting Point:<span> 254.0 °C (527.15 K, 489.2 °F) </span>
Boiling Point:<span> 962.0 °C (1235.15 K, 1763.6 °F) </span>
Number of Protons/Electrons:<span> 84 </span>
Number of Neutrons:<span> 125 </span>
Classification: Metalloid 
Crystal Structure:<span> Monoclinic </span>
Density @ 293 K:<span> 9.4 g/cm</span>3 
Color:<span> Unknown</span>


Atomic Structure<span> <span>
Number of Energy Levels: 6<span>
First Energy Level: 2 
Second Energy Level: 8 
Third Energy Level: 18 
Fourth Energy Level: 32 
Fifth Energy Level: 18 
Sixth Energy Level: 6
does it help?</span></span></span>
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Describe the redox reaction. Check all that apply 2AI(s) + 3ZnCI2(g) → 3Zn(s) + 2AICI3(aq).
Inga [223]

Answer:

Zinc is reduced.

The oxidation number of chlorine does not change.

Aluminum is oxidized.

Explanation:

  • For the reaction:

<em>2AI(s) + 3ZnCI₂(g) → 3Zn(s) + 2AICI₃(aq). </em>

<em></em>

  • For the elements in the reactants side:

Al has (0) oxidation state and converted to (+3) oxidation state in the products (AlCl₃), which means Al is oxidized and it is the reducing agent.

So, we can check that: Aluminum is oxidized.

Zn has the oxidation state (+2) in the reactants side (ZnCl₂) and converted to (0) in the products side (Zn), which means that Zn is reduced and it is the oxidizing agent.

So, we can check that: Zinc is reduced.

<em>and can not check: Zinc is the reducing agent.  </em>

<em />

The oxidation state of Cl does not change, it is the same in both sides (-1).

So, we can check: The oxidation number of chlorine does not change.

<em>and can not check: Aluminum atoms transfer electrons to chlorine atoms. </em>

<em />

  • So, the choices will be:

<em>Zinc is reduced.</em>

<em>The oxidation number of chlorine does not change.</em>

<em>Aluminum is oxidized. </em>

4 0
4 years ago
Read 2 more answers
If the heating curve is reversed, what describes the melting point?
olasank [31]
The point of Condensation
6 0
3 years ago
A certain compound is made up of one phosphorus (P) atom, three chlorine (Cl) atoms, and one oxygen (O) atom. What is the chemic
yulyashka [42]

Answer: PCl₃O

Explanation:

1) The chemical formula tells the composition of a compound in terms of the ratio of number of atoms of each element that consitutes such compound.

2) You use the chemical symbol for each kind of atom (element) and subscripts to the right of each symbol to tell the number of atoms of each element.

3) For example, O₂ means two atoms of oxygen. Al₂O₃ means two atoms of aluminum and 3 atoms of oxygen.

4) Therefore, PCl₃O means a ratio 1 : 3 : 1 for phosphorus, chlorine, and oxygen.

Hence, PCl₃O is the chemical formula of your compound.

3 0
3 years ago
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A rock has a mass of 15 grams and a volume of 5 cm3. What is the density of the rock?
xz_007 [3.2K]
The answers is 3.0 g/cm^3

Explanation:
You use the formula
Density= mass/volume
When they give you mass and volume.

The mass is 15 grams and the volume would be 5 cm^3.

So the density would be
15/5= 3
3 0
3 years ago
What property of water allows water to work as a universal solvent?
fgiga [73]

Answer:

The water is universal solvent because it is a polar molecule.This have hydrogen bonding in which hydrogen molecule have positive charge and oxygen molecule have negative charge because electro negativity of oxygen molecule is higher than hydrogen molecule that is why it pull the hydrogen molecule and formed a polar molecule.That is why is also known as universal solvent.

6 0
4 years ago
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