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4 years ago

What atomic structure has 56 protons and 84 neutrons?

Chemistry

1 answer:

Nikitich [7]4 years ago

3 0

Name: Polonium 
Symbol: Po 
Atomic Number: 84 
Atomic Mass: (209.0) amu 
Melting Point: 254.0 °C (527.15 K, 489.2 °F) 
Boiling Point: 962.0 °C (1235.15 K, 1763.6 °F) 
Number of Protons/Electrons: 84 
Number of Neutrons: 125 
Classification: Metalloid
Crystal Structure: Monoclinic 
Density @ 293 K: 9.4 g/cm3
Color: Unknown

Atomic Structure 
Number of Energy Levels: 6
First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 18
Fourth Energy Level: 32
Fifth Energy Level: 18
Sixth Energy Level: 6
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How many dimes could you trade for 360 pesos? $1 = 1500 pesos.

sveta [45]

Answer:

The correct option is (d).

Explanation:

It is given that,

1$ = 1500 pesos

We need to convert 360 pesos into dimes

We can convert 360 pesos to dollars as follows:

$360\ \text{pesos}=\$\dfrac{1}{1500}\times 360\\\\=$0.24$

360 pesos is equal to $0.24

Also, 1 dollar = 10 dimes

We can covert 0.24 dollar to dimes as follows :

0.24 dollar = 10 × 0.24 dimes

0.24 dollar = 2.4 dimes

360 pesos = 2.4 dimes

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3 years ago

Brodation number of oxygen in F2O is.

larisa86 [58]

Answer:

Oxidation number of F2O = 0−(−1×2)

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3 years ago

A solution is made by dissolving 23.5 grams of glucose (C6H12O6) in 0.245 kilograms of water. If the molal freezing point consta

aalyn [17]

Answer:

- 0.99 °C ≅ - 1.0 °C.

Explanation:

We can solve this problem using the relation:

ΔTf = (Kf)(m),

where, ΔTf is the depression in the freezing point.

Kf is the molal freezing point depression constant of water = -1.86 °C/m,

m is the molality of the solution (m = moles of solute / kg of solvent = (23.5 g / 180.156 g/mol)/(0.245 kg) = 0.53 m.

∴ ΔTf = (Kf)(m) = (-1.86 °C/m)(0.53 m) = - 0.99 °C ≅ - 1.0 °C.

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4 years ago

The metal zirconium becomes superconducting at temperatures below 3.4000K.

dybincka [34]

Answer:

-269.75 degrees Celsius

Explanation:

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3 years ago

A single atom of an element has 21 nutrons 20 electtons and 20 protons which element is it

guajiro [1.7K]

your element would be calcium

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4 years ago