Answer:
The analogy that best describes is "The planets go around the sun."
Explanation:
The best analogy that suggests that electrons moves round the nucleus in an atom is the Bohr model. According to Neil Bohr, Based on Rutherford's model, he suggested that the extra nuclear part consists of electrons.
These electrons are in the spherical orbits called shells or energy levels around the nucleus.
The nucleus is the tiny massive center of the atom.
Transition of electrons takes place from one level to another.
The nuclear disintegration series of 238-U is the source of radon-222 in soil.
<h3>What is nuclear disintegration ?</h3>
- The process of nuclear disintegration is how an unstable atomic nucleus loses energy through radiation.
- A substance that has unstable nuclei is regarded as radioactive.
- Alpha, beta, and gamma decay are three of the most prevalent types of decay, and they all entail the emission of one or more particles.
- Ionizing radiation offers a health concern by destroying tissue and the DNA in genes because it can damage the atoms in living things.
- Alpha particles may be present in the ionising radiation that is released.
- As one atom transforms into another, radioactive decay involves the emission of a particle and/or energy.
- Helium ions are released from an atom's nucleus during alpha decay. A neutron in the nucleus is converted to a proton and electron during beta decay.
Learn more about radioactive decay here:
brainly.com/question/1770619
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Hey there!
We Know that:
2 Ag⁺(aq) + Zn(s) <-> Zn²⁺(aq)+2 Ag(s)
The equilibrium expression for the reaction is:
Kc = [ Zn⁺² ] / [Ag⁺ ]²
Hope that helps!
Answer:
(D) Neither I nor II
Explanation:
The reagent potassium hydrogen phthalate is found in pure form and it is not partially hydrated .
The pallet form of NaOH ( solid form ) absorbs carbon dioxide gas from the atmosphere but NaOH in solution form does not absorb carbon dioxide .
Hence option D ) is right choice .
