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nasty-shy [4]
2 years ago
9

Cuál es la característica principal para que un elemento sea radiactivo?

Chemistry
1 answer:
Anuta_ua [19.1K]2 years ago
3 0

Definimos la radiactividad como el proceso mediante el cual un núcleo inestable pierde energia mediante emisiones (puede emitir fotones, neutrones, etc.)

Así, la característica princpial es que el elemento debe ser inestable.

-------------------------------------

Cuando tenemos un elemento inestable, lo que puede deberse a que el elemento tiene un núcleo muy grande, o a que el elemento por alguna razón tiene muchos neutrones, este elemento querrá de alguna manera volver a un estado más estable.

Usualmente, la inestabilidad se ve representada como un dado exceso de energía, entonces la forma en la que el átomo se estabiliza es liberando energía de alguna forma.

Esta energía puede ser liberada mediante una desintegración, donde el elemento original se convierte en otros elementos y en el proceso se liberan nucleones, o por emisiones de fotones característicos del elemento, o de otras diversas formas que dependerán del caso particular.

Concluyendo la idea, para que un elemento sea radiactivo (es decir, emite radiación) la característica  que este elemento debe tener es que debe ser inestable.

Sí quieres aprender más, puedes leer.

brainly.com/question/17132033

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Calculate the standard cell potential at 25 ∘C for the reaction X(s)+2Y+(aq)→X2+(aq)+2Y(s) where ΔH∘ = -687 kJ and ΔS∘ = -169 J/
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-0.129V

Explanation:

The change in free energy is obtained from the given parameters after which the value is now applied to obtain the cell potential in volts from the formukar shown in the solution below.

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_NaHCO(s) --&gt; _CO2+_NaCO(s)+_H2O<br><br>balance the equation​
elena55 [62]

The balanced equation :

2NaHCO₃⇒CO₂ + Na₂CO₃+H₂O

<h3>Further explanation</h3>

Given

Reaction

NaHCO(s) --> _CO2+_NaCO(s)+_H2O

Required

The balanced equation

Solution

Maybe the equation should be like this :

NaHCO₃⇒CO₂ + Na₂CO₃+H₂O

Give a coefficient

NaHCO₃⇒aCO₂ + bNa₂CO₃+cH₂O

Make an equation

Na, left=1, right=2b⇒2b=1⇒b=1/2

H, left=1, right=2c⇒2c=1⇒c=1/2

C, left=1, right=a+b⇒a+b=1⇒a+1/2=1⇒a=1/2

The equation becomes :

NaHCO₃⇒1/2CO₂ +1/2Na₂CO₃+1/2H₂O x2

2NaHCO₃⇒CO₂ + Na₂CO₃+H₂O

5 0
2 years ago
A 0.02 molar solution of sodium chloride contains 0.1 mole of solute. What is the volume of the solution
Deffense [45]

Answer:

Volume of solution = 5 L

Explanation:

Given data:

Molarity of solution = 0.02 M

Moles of solute = 0.1 mol

Volume of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

by putting values,

0.02 M = 0.1 mol / volume of solution

Volume of solution = 0.1 mol / 0.02 M

Volume of solution = 5 L

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2 years ago
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