Answer:
Which atomic model describes the atom as a nucleus surrounded by electrons that may travel as waves in the electron cloud?
Explanation:
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The atom which it would be most difficult to remove an electron from is: an atom of a noble gas.
An atom refers to a smallest, indivisible unit that comprises the matter that forms all chemical elements.
Basically, the three (3) distinct particles that makes up an atom include;
Electrons are the subatomic particles of a chemical element that are negatively charged with a magnitude of -1.
Noble gases can be defined as a group of chemical elements with eight (8) valenceelectrons, which simply means they are found in group eight (8) of the periodic table and have a full octet.
Some examples of noble gases are:
The octet rule states that atoms of chemical elements lose, gain or share electrons, in order to have eight (8) electrons in their valence shell.
Based on the octet rule, it would be most difficult to remove an electron from the atom of a noble gas because of its high ionization energy and a completely filled valence (outermost) shell.
In conclusion, the full octet possessed by noble gases make them unlikely to combine with other chemical elements.
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cesium (Cs)
fluorine (F)
boron (B)
Answer: Cesium (Cs)
Explanation:
Elements lose or gain electrons in their valence shell so as to maintain stability by either forming duplets or octet configuration. I.e 2 electrons in its outer shell to form duplet or 8 in its outer shell to form octet configurations. All metals with exception of Metalloids lose electrons in its outer shell corresponding to its group number to form stability. I.e group 1 elements lose 1 electrons to form stability, group two elements lose 2 electrons, group 3 and so on. From the elements listed above, Cesium is a group 1 element and it will require to lose 1 electron so as to form stability. Magnesium (Mg) loses 2 electrons to form stability, Fluorine (F) a non metal from group (vii) requires 1 electron to be stable and boron a group (v) element would need 3 electrons to form stability.
Answer: The process is called as nuclear decay process.
Explanation:
Nuclear reaction are defined as the reactions in which nucleus of an atom is involved.
Isotopes under decay process in order to attain stability.
Unstable isotopes known as parent isotopes undergo various decay processes to form stable isotopes known as daughter isotopes.
The various decay processes are:
Hence, the process is called as nuclear decay process.
B) a molar volume
C) the mole ratio
D) Avogadro's number
Hey there!
Molar mass is the mass of one mole of the substance.
The molar mass of carbon-12 is 12 grams, because this is the mass of one mole of the substance.
This means the answer is a) one mole.
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Answer:A
Explanation:
The difference between renewable and non-renewable resources is that renewable resources are being made faster, and we have an infinite supply of them, while non-renewable resources take longer to make(like millions of billions of years) and therefore run out easily.
Renewable resources are like solar, hydro, and wind energy. They are basically impossible to get rid of.
Non-renewable resources are like coal. It takes a long time to make and is nearly run out.
The difference is that renewable resources can be remade, on the other hand non renewable cannot be remade