1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alex41 [277]
3 years ago
6

The atomic symbol Superscript 206 subscript 82 upper P b. represents lead-206 (Pb-206), an isotope that has 82 protons and 124 n

eutrons. Which atomic symbol could represent an isotope that undergoes radioactive decay to produce Pb-206
Chemistry
2 answers:
Serggg [28]3 years ago
8 0

Answer:

\left \{ {{y=206} \atop {x=82}}Pb \right.

Explanation:

isotopes are various forms of same elements with different atomic number but different mass number.

Radioactivity is the emission of rays or particles from an atom to produce a new nuclei. There are various forms of radioactive emissions which are

  • Alpha particle emission  \left \{ {{y=4} \atop {x=2}}He \right.
  • Beta particle emission    \left \{ {{y=0} \atop {x=-1}}e \right.
  • gamma radiation             \left \{ {{y=0} \atop {x=0}}γ \right.

in the problem the product formed after radiation was Pb-206. isotopes of lead include Pb-204, Pb-206, Pb-207, Pb-208. they all have atomic number 82. which means the radiation cannot be ∝ or β since both radiations will alter the atomic number of the parent nucleus.

Only gamma radiation with \left \{ {{y=0} \atop {x=0}}γ \right. will produce a Pb-206 of atomic number 82 and mass number 206 , since gamma ray have 0 mass and has 0 atomic number.equation is shown below

\left \{ {{y=206} \atop {x=82}}Pb\right ⇒ \left \{ {{y=206} \atop {x=82}}Pb\right +  \left \{ {{y=0} \atop {x=0}}γ\right.

Thus the atomic symbol is \left \{ {{y=206} \atop {x=82}}Pb\right

stellarik [79]3 years ago
7 0

Answer:

option B

Explanation:

The question is incomplete. Here is the complete question.

The atomic symbol 206 82 Pb represents lead-206 (Pb-206), an isotope that has 82 protons and 124 neutrons. Which atomic symbol could represent an isotope that undergoes radioactive decay to produce Pb-206?  

A. 238 92 U

B. 222 87 Pb  

C. 178 72 Hf

D. 192 77 Pb

Let’s talk about isotopes first. Isotopes are atoms of the same element with identical number of protons but different number of neutrons. For e.g. Pb 206 and Pb-208 are isotopes. Both have same number of protons i.e. 82. However, Pb-206 has 124 neutrons while Pb 208 has 126 neutrons.  

Radioactive decay happens when either alpha particle (atomic mass = 4, atomic number=2), beta particle (an electron) or gamma rays are emitted from an atom.

  1. If alpha emits, the atomic mass reduces by 4 and atomic number reduces by 2
  2. If beta emits, atomic number increases by +1.
  3. If gamma emits, no change to the atom occurs.

Now since Pb-206 was made from an isotope, option A and option C rules out. Radioactive decay results in reduction of atomic mass, hence option D is wrong too. Therefore, the correct answer is option B. Below is the equation for the decay.

222,87 Pb → 206,82 Pb + 4(4,2 He) + 3(0,-1 e)

To simplify, 4 alpha particles and 3 beta particles were emitted from 222,87Pb to create 206,82 Pb.

You might be interested in
In water, hydrochloric acid forms positive ______ ions and negative _______ ions
kondaur [170]

Answers:

1st: H30+

2nd: CI-

3 0
3 years ago
The volume of a given mass of an ideal gas at constant pressure is
Alenkasestr [34]
Would that be mass times volume?


3 0
3 years ago
.92 moles of carbon dioxide, CO2, was produced when you burned C6H120. (glucose) with O2.
Radda [10]

Answer:

16.56g.

Explanation:

You need to compare the number of coefficient of the reaction product to find how much water produced. The reaction formula will produce 6 carbon dioxide(CO2) and 6 water (H2O).

If the reaction produces 0.92 moles of carbon dioxide, then the amount of water produced in moles will be: 0.92 moles * (6/6)= 0.92 moles

The molar mass of water is 18g/mol, so the calculation of moles to mass will be: 0.92 moles * (18g/mol)= 16.56g.

6 0
3 years ago
Read carefully and choose the correct answer.ill mark brainliest​
Veseljchak [2.6K]

Answer:

Hello shaggy

Explanation:

Good morning dear

How are you

5 0
3 years ago
What is the formula of nitrous acid
Fudgin [204]

Answer:

HNO2

Explanation:

It is a pale blue solution and it is only known in solution and gas form.

4 0
2 years ago
Other questions:
  • What measurement of a liquid can you make with a graduated cylinder
    9·2 answers
  • What is the most reactive metal on the periodic table?
    7·1 answer
  • When an aqueous solution of magnesium nitrate is mixed with an aqueous solution of potassium carbonate, ____________.?
    13·1 answer
  • Nitrogen and carbon can form ___ bonds in which six electrons ( three pairs ) are shared.
    9·1 answer
  • What can you say about the activity?
    6·1 answer
  • A duck migrates South for the winter about 3000 miles each year. It takes them about 65 hours to travel this distance. What is t
    6·1 answer
  • What kind of energy makes your hair frizzy
    12·1 answer
  • Where are red blood cells made <br><br>​
    12·2 answers
  • At what time of day would you be most likely to find that the air over water is significantly warmer than the air over land near
    13·1 answer
  • What is the molarity of a solution that has 2.52 grams of NaCO3 dissolved to
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!