when polonium-210 undergoes alpha decay, lead-206 is produced.

What is the same and different between the two elements?

It changed name so it changed the number of protons

Polonium Po has 84 protons (atomic number 84)
Lead Pb has 82 protons (atomic number 82)
so the Po lost 2 protons
the total atomic mass changed by 4 so the Po also lost 2 neutrons
note that a Helium nucleus has two protons and two neutrons. That is what got ejected as an alpha particle.
They are on the same heavy metal row but Po is 2 columns to the right in your periodic table

Polonium-210 and Lead-206 are two different elements with varying properties. Here are some similarities and differences between them:

1. Atomic Number: The atomic number of an element represents the number of protons in its nucleus. Polonium-210 has an atomic number of 84, while Lead-206 has an atomic number of 82. Thus, both elements have a different number of protons.

2. Alpha Decay: Polonium-210 undergoes alpha decay, which means that it emits an alpha particle (consisting of two protons and two neutrons) from its nucleus. This decay process results in the formation of a new element, which in this case is Lead-206. Therefore, lead is produced as a result of the alpha decay of polonium.

3. Radioactivity: Polonium-210 and Lead-206 are both radioactive isotopes. Polonium-210 is highly radioactive and emits alpha particles, while Lead-206 is a stable isotope and does not undergo any radioactive decay.

4. Physical Properties: Polonium-210 is a rare, silver-colored metal with a low melting point and boiling point. It is highly toxic and has a short half-life of about 138 days. On the other hand, Lead-206 is a soft, dense metal with a low melting point and high boiling point. It is less toxic than polonium and is stable, having no radioactive properties.

In summary, the similarities between polonium-210 and lead-206 are that they both originate from the same parent element through alpha decay. However, they differ in terms of atomic number, radioactivity, and physical properties such as toxicity and stability.

When comparing Polonium-210 and Lead-206, there are both similarities and differences to consider.

Similarities:
1. Both elements belong to the same chemical group, known as the chalcogens. This group includes oxygen, sulfur, selenium, tellurium, polonium, and livermorium.
2. Polonium-210 and Lead-206 are both heavy elements with relatively high atomic masses.
3. They both have stable isotopes. While Polonium-210 is radioactive, with a half-life of about 138 days, Lead-206 is stable and does not undergo radioactive decay.

Differences:
1. Atomic number: Polonium-210 has an atomic number of 84, while Lead-206 has an atomic number of 82. This means that Polonium-210 has 84 protons in its nucleus, while Lead-206 has 82 protons.
2. Radioactivity: Polonium-210 is highly radioactive and decays through alpha decay, emitting alpha particles. On the other hand, Lead-206 is a stable element and does not undergo radioactive decay.
3. Physical properties: Polonium-210 is a rare, silver-gray metal that is highly toxic and has a low melting point. Lead-206, on the other hand, is a dense, soft, and malleable metal that is commonly used in construction, batteries, and soldering.

To obtain this information, you can use various reliable sources such as chemistry textbooks, periodic tables, or reputable websites that provide accurate information about the properties and characteristics of elements.