Bond energy is related to bond length. Use the bond energy data below to arrange the bonds listed in order of increasing bond length (shortest to longest).Bond : Energy (kJ/mol)- C-C : 346
- C=C : 835
- C≡C : 612
Answers
Answer:
The order of increasing bond lenght :
-C≡C < -C=C < -C-C
Explanation:
Bond length is defined as average distance between two nuclei of bonded atoms in a molecule.Bond length is inversely proportional to the number of bonds present between two atoms.
...[1]
Bond energy is defied as amount of energy required to break apart the bond of 1 mole of molecule into their individual atom.
Bond energy is directly proportional to the number of bonds present between two atoms.
..[2]
From [1] and [2]:
Bond : Energy (kJ/mol)
-C-C : 346
-C=C : 612
-C≡C : 835
The order of decreasing bond energy :
835 kJ/mol > 612 kJ/mol > 346 kJ/mol
The order of increasing bond lenght :
-C≡C < -C=C < -C-C
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How is the number of valence electrons related to the ionization energy of an element?A) low ionization energy correlates to elements with fewer valence electrons B) elements with higher ionization energy tend to have less valence electrons C) atoms with nearly full valence electrons shells have lowers ionization energy D) high ionization energy indicated a low likelihood to gain valence electrons
Answers
The radius of a positive ion always less than the radius of its neutral atom because the nucleus pulls the remaining electrons in closer.
What is an atom ?
Each atom is made up of a nucleus and one or more electrons that are linked to it. One or more protons and a significant number of neutrons make up the nucleus.
Only the most prevalent kind of hydrogen is neutron-free. The smallest component of ordinary stuff that makes up a chemical element is an atom.
Quarks and electrons are the two categories of fundamental particles that make up an atom. An atom's nucleus is surrounded by an area of electrons. The electrical charge of every electron is negative one.
Protons and neutrons, which together make up an atom's nucleus, are made of quarks.
Thus, option A is correct.
To learn more about an atom, follow the link;
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(A)-This sounds accurate, but is actually not true. When an atom loses an electron and forms a positive ion, there will be less negative charge from the electrons to attract the positively charged nucleus. Losing electrons will actually decrease the attraction between the electrons and the nucleus.
(B)-This is true in some cases, but not all. If, for example, sodium were to lose an electron, it would drop down to having its largest orbital being in the second energy level, and would decrease in size. If magnesium were to lose an electron, it would still have one electron in the third energy level, so it wouldn't drop down an energy level.
(C) and (D)-Not sure where these answers even came from.
The actual reason behind the radius of a positive ion being smaller than the radius of its neutral atom is that the repulsive force between the electrons themselves is decreased, causing them to move closer together.
b) phosphorus
c) aluminum
d) boron
Answers
hope it helps
Answers
Mass of a substance = Moles of a substance × molar mass of a substance
We have 0.94 moles of NaHCO3. The molar mass of NaHCO3 is the sum of the atomic masses of the elements comprising NaHCO3, which is approximately 84.007 g/mol.
The mass of 0.94 moles of sodium bicarbonate is therefore (0.94 moles NaHCO3)(84.007 g NaHCO3/mol NaHCO3) = 78.97 ≈ 79 grams of sodium bicarbonate.
(2) CH3CHCH2 and CH3CH2CH3
(3) CH3CHO and CH3COCH3
(4) CH3CH2OH and CH3OCH3
Answers
Answer is (4) - CH₃CH₂OH and CH₃OCH₃.
Both CH₃CH₂OH and CH₃OCH₃ have same molecular formula as C₂H₆O. But CH₃CH₂OH is an alcohol and CH₃OCH₃ is an ether.
Although two compounds have a same molecular formula, the atomic arrangement of those compounds differs from each other.
Hence, CH₃CH₂OH and CH₃OCH₃ are isomers of the formula C₂H₆O.
Due to the different arrangement of atoms, both compounds have different chemical and physical properties.
silicon (#14)
cobalt (#27)
sodium (#11)
Answers
The element among the list that is not a metal there is the element fluorine.
What is a nonmetal?
A nonmetal is an element that occur towards the right hand side of the periodic table and does not have the general properties that are attributed to metals such as the ability to react with acids.
The element among the list that is not a metal there is the element fluorine.
Learn more about metals: brainly.com/question/2273750
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Answers
An ion is an atom which has gained or lost electrons.
Atoms want to have full outer shells of electrons.
Electrons are negative.
Fluorine has 7 electrons in its outer shell. When it gains one to fill its shell it will be made negative.
Thus the charge of a fluorine ion is -1