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Nat2105 [25]
3 years ago
10

Is the following nuclear equation balanced? Yes or No.

Chemistry
2 answers:
4vir4ik [10]3 years ago
5 0

Answer: No

Explanation:

_{85}^{218}\textrm{At}\rightarrow _{84}^{218}\textrm{Po}+_{-1}^0\beta

A balanced nuclear equation is one in which the atomic number and mass number remains same on both sides of the equation i.e the number of protons and neutrons remain same.

In the given equation, the atomic number on left hand side is 85 and the mass number is 218. The atomic number on the right hand side will be (84-1)= 83 and the mass number is (218+0)=218. Thus the equation is not balanced as the mass number is same but the atomic number is different.

Maru [420]3 years ago
3 0

<em>Answer:</em>

  • No

<em>Reason: </em>

  • During a beta decay, one neutron convert into one proton and one electron. The proton remained in nucleus while electron move away known as beta radiation. So atomic mass will be remained same but atomic no will increase by one. So correct ans will be with 218, 86 Po and beta radiation.
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sergejj [24]

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6. Negative

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Explanation:

7 0
2 years ago
Are the properties of Rubidium more similar to those of cesium or those of strontium?
fenix001 [56]

More similar to Cesium

Explanation:

The properties of Rubidium are more similar to those of cesium compared to strontium.

Elements in the same group on the periodic table have similar chemical properties.

  • Rubidium and Cesium are located in the first group on the periodic table.
  • Other elements in this group are lithium, sodium, potassium and francium
  • Strontium belongs to the second group on the periodic table.
  • The first group have a ns¹ valence shells electronic configuration.
  • They are all referred to as alkali metals

Learn more:

Sodium brainly.com/question/6324347

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5 0
3 years ago
A sample containing 16.93 metal pellets is poured into a graduated cylinder containing 11.2 of water, causing the water level in
mixer [17]

Answer:

<h3>The answer is 1.99 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 16.93 g

volume = final volume of water - initial volume of water

volume = 19.7 - 11.2 = 8.5 mL

We have

density =  \frac{16.93}{8.5}  \\  = 1.9917647058...

We have the final answer as

<h3>1.99 g/mL</h3>

Hope this helps you

7 0
3 years ago
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Anika [276]
False

there is actually 9
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