Answer:The correct answer is option (2).
Explanation:
A covalent bond is defined as sharing of the electrons between two atoms with less or zero difference in their electronegativites.
A multiple covalent bonds are those bond where more than one bond is present. Like double or triple bonds.
In double covalent bonds there are 4 electrons are shared.
in triple covalent bonds there are 6 electrons are shared.
Single covalent bond is formed by sharing of two electrons while multiple covalent bond is formed when 4 electrons are shared, thus the correct option is 2.
Covalent bond is defined as a type of bond which is formed by the mutual sharing of electrons to form electron pairs between the two atoms.These electron pairs are called as bonding pairs or shared pair of electrons.
Due to the sharing of valence electrons , the atoms are able to achieve a stable electronic configuration . Covalent bonding involves many types of interactions like σ bonding,π bonding ,metal-to-metal bonding ,etc.
Single covalent bond is formed when 2 electrons are shared while multiple covalent bond is formed when 4 electrons are shared, thus the correct option is 2.
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What are the reactions and what do I need to calculate?
The invisible electric force field around charged objects depends on the amount of charge, distance involved, and shape of the objects.
The formation of charged matter is depends on the transfer of electrons, either within a material or between two materials. There are three ways this can occur are known as conduction, polarization, and friction.
Charged objects surround themselves with an imperceptible electric force field. The charge, distance, and shape of the items are only a few of the factors that affect strong field.
The electric charge on the particles and the separation between them determine the strength of the electric force. Greater force is produced by larger charges.
Thus, The invisible electric force field around charged objects depends on the amount of charge, distance involved, and shape of the objects.
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B) humus.
C) loam.
Eliminate
D) silt.
Answer:
Answer is Humus
Explanation:
Chromium-50 has 26 neutrons, chromium-52 has 28 neutrons, and chromium-53 has 29 neutrons.
Chromium has an atomic number of 24, which means it has 24 protons. To determine the number of neutrons in each chromium isotope, subtract the atomic number from the mass number. For chromium-50, subtracting 24 from 50 gives you 26 neutrons. For chromium-52, subtracting 24 from 52 gives you 28 neutrons. And for chromium-53, subtracting 24 from 53 gives you 29 neutrons.
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Answer: Hess's Law says the total enthalpy change does not rely on the path taken from beginning to end. Enthalpy can be calculated in one grand step or multiple smaller steps.
To solve this type of problem, organize the given chemical reactions where the total effect yields the reaction needed. There are a few rules that you must follow when manipulating a reaction.
The reaction can be reversed. This will change the sign of ΔHf.
The reaction can be multiplied by a constant. The value of ΔHf must be multiplied by the same constant.
Any combination of the first two rules may be used.
Finding a correct path is different for each Hess's Law problem and may require some trial and error.
Hardness is indicative of the strength of chemical bonds between elements.
Hardness is determined through a complicated process that requires expensive instruments.
Friedrich Mohs developed the standard hardness scale.
Diamond can scratch quartz.
Answer:The properties of the Hardness are:
Hardness is defined as resistance offered by a material when subjected to any kind of mechanical effort.It is a physical property
Hardness of a materiel indicates its strength that strength of its chemical bond between the atoms and their arrangement in space.
Mohs scale is a scale which measures the hardness of the materiel from 1 to 10. Materiel with higher Mohs scale number will able to scratch materiel with lower Mohs scale score.
The properties of the Hardness are:
Hardness is a physical property
Hardness is indicative of the strength of chemical bonds between elements.
Diamond can scratch quartz.