Chemistry, 04.12.2020 17:20 jamiecoolgal8697

Make at least 3 observations that compare the Polonium nucleus before and after it decays?

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Answer from: brenyasanders4001

Observations

The Polonium nucleus disintegrates to form a stable Lead nucleus with the emission of an alpha particle.The mass number of the original Polonium nucleus decreases by 4 ( ie from 210 to 206)The atomic number of the original Polonium nucleus decreases by 2 (ie from 84 to 82)

Explanation:

Polonium (Po) is a radioactive silver-grey material that exists in very low concentrations as a solid in the environment.

As a radioactive substance, it is unstable and then it undergoes radioactive alpha decay to form a stable chemical element - Lead (Pb)

Polonium Nucleus before decay

Polonium (²¹⁰₈₄Po) has a mass number of 210 and an atomic number of 84. The atomic number tells us that Polonium has 84 protons in its nucleus before it undergoes decay.

The mass number tell us that Polomium has 126 neutrons in addition to the 84 protons in its nucleus

The total number of protons and neutrons in a nucleus make up its Mass Number

Polonium Nucleus after decay

Polonium undergoes radioactive decay by emitting an alpha particle, which is also known as a Helium particle (⁴₂He)

²¹⁰ ₈₄Po ⇒ ²⁰⁶ ₈₂Pb + ⁴₂He

Observations

The Polonium nucleus disintegrates to form a stable Lead nucleus with the emission of an alpha particleThe mass number of the original Polonium nucleus reduces by 4 ( ie from 210 to 206)The atomic number of the original Polonium nucleus decreases by 2 (ie from 84 to 82)A new stable element (Lead) is formed.An alpha particle (⁴₂He) is released.

Answer from: Quest

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.

Answer from: Quest

Vander waals forces are inter molecular bonds that exist within molecules of the same substance. a water molecule is made up of oxygen and hydrogen atoms which share electrons between each other. the vander waals forces are forces that exist between multitude of different molecules of water. dipole dipole forces is the type of vander waals force that exist in water. the oxygen atom which is more electronegative pulls the shared electron closer to itself thus generating a partial negative charge while the hydrogen acquire a partial positive charge. these two different charges causes attraction to occur in water molecules.

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