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Q: Na+ and Cl- are ions formed from _____.
A: Sodium Chloride, NaCl The classic case of ionic bonding, the sodium chloride molecule forms by the ionization of sodium and chlorine atoms and the attraction of the resulting ions. An atom of sodium has one 3s electron outside a closed shell, [ and it takes only 5.14 electron volts of energy to remove that electron. The chlorine lacks one electron to fill a shell, and releases 3.62 eV when it
acquires that electron (it's electron affinity is 3.62 eV). This means that it takes only 1.52 eV of energy to donate one of the sodium electrons to chlorine when they are far apart. When the resultant ions are brought closer together, their electric potential energy becomes more and more negative, reaching -1.52 eV at about 0.94 nm separation. This means that if neutral sodium and chlorine atoms found themselves closer than 0.94 nm, it would be energetically favorable to transfer an electron from Na to Cl and form the ionic bond. The potential energy curve shows that there is a minimum at 0.236 nm separation and then a steep rise in potential which represents a repulsive force. This repulsive force is more than just an electrostatic repulsion between the electron clouds of the two atoms. It has a quantum mechanical character rooted in the Pauli exclusion principle, and is often called just the "exclusion principle repulsion". When the ions are widely separated, the wavefunctions of their core electrons do not significantly overlap and they can have identical quantum numbers. As they get closer, the increasing overlap of the wavefunctions causes some to be forced into higher energy states. No two electrons can occupy the same state, so as a new set of energy states is formed for the composite, two-nucleus system, the lower energy states are filled and some of the electrons are pushed into higher states. This requires energy and is experienced as a repulsion, preventing the ions from coming any closer to each other. The potential diagram above is for gaseous NaCl, and the environment is different in the normal solid state where sodium chloride (common table salt) forms cubical crystals. ]
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Original conversation
User: The number of protons plus the number of neutrons equals the _____. atomic number atomic mass atomic weight atomic neutrality

User: Na+ and Cl- are ions formed from _____.

Weegy: Sodium Chloride, NaCl The classic case of ionic bonding, the sodium chloride molecule forms by the ionization of sodium and chlorine atoms and the attraction of the resulting ions. An atom of sodium has one 3s electron outside a closed shell, [ and it takes only 5.14 electron volts of energy to remove that electron. The chlorine lacks one electron to fill a shell, and releases 3.62 eV when it acquires that electron (it's electron affinity is 3.62 eV). This means that it takes only 1.52 eV of energy to donate one of the sodium electrons to chlorine when they are far apart. When the resultant ions are brought closer together, their electric potential energy becomes more and more negative, reaching -1.52 eV at about 0.94 nm separation. This means that if neutral sodium and chlorine atoms found themselves closer than 0.94 nm, it would be energetically favorable to transfer an electron from Na to Cl and form the ionic bond. The potential energy curve shows that there is a minimum at 0.236 nm separation and then a steep rise in potential which represents a repulsive force. This repulsive force is more than just an electrostatic repulsion between the electron clouds of the two atoms. It has a quantum mechanical character rooted in the Pauli exclusion principle, and is often called just the "exclusion principle repulsion". When the ions are widely separated, the wavefunctions of their core electrons do not significantly overlap and they can have identical quantum numbers. As they get closer, the increasing overlap of the wavefunctions causes some to be forced into higher energy states. No two electrons can occupy the same state, so as a new set of energy states is formed for the composite, two-nucleus system, the lower energy states are filled and some of the electrons are pushed into higher states. This requires energy and is experienced as a repulsion, preventing the ions from coming any closer to each other. The potential diagram above is for gaseous NaCl, and the environment is different in the normal solid state where sodium chloride (common table salt) forms cubical crystals. ]
sheila_taylo_elabano|Points 0|

User: The three subatomic particles are _____.

Weegy: The three main subatomic particles that form an atom are protons, neutrons, and electrons.
smp0784|Points 4006|

User: Table salt is the result of a(n) _____.

Weegy: Table salt is a combination of sodium & chloride also no. NaCl (table salt or Sodium Chloride) is formed as a result of an ionic bond. [ A hydrogen bond is usually, if not always, in reference to water, and is much weaker than an ionic bond. ]
roisRie|Points 290|

User: The smallest unit of a compound is a(n) _

Weegy: The smallest unit of a compound is a molecule.



User: Carbohydrates _____.

Weegy: Hi! What is your question?
flmom08|Points 2058|

User: Carbohydrates _____. in the body are primarily fats are primarily sugars and starches are the most readily available source of energy for organisms are the largest of the four main biological macromolecules

Weegy: Carbohydrates are primarily sugars and starches and easily converted and stored when needed.
jeifunk|Points 9912|

User: The law of mass action suggests that _____.

User: Atoms have a tendency to complete their outer energy level. This is known as _____.

User: Lipids _____. consist of fats, phospholipids, and steroids include cholesterol and saturated fats are primarily sugar and starches are the most highly concentrated source of energy

User: Oxygen has an atomic number of 8. The n = 1 energy level has two electrons, and the n = 2 energy level has six electrons. Oxygen's valence is _____.

Weegy: A.+2
Sunshiineluv|Points 678|

User: Nucleic acids _____. are the largest of the four main biological macromolecules determine whether an organism is a bacterium, tree, mouse, or human are the building blocks of proteins consist of DNA and RNA

Weegy: are the building blocks of proteins
mythmoh|Points 5349|

User: do nucleic acids have dna or rna

Weegy: The monomers of nucleic acids, such as DNA and RNA, are known as nucleotides
chris_ben|Points 61|

User: The smallest unit that retains the properties of an element is a(n) _____.

Weegy: An atom is the smallest unit that retains the properties of an element.
miss186|Points 716|

User: An atom that has gained or lost electrons is called an ion

Weegy: An atom that has lost or gained electrons is called an ion. If the atom gains one or more electrons it is called an anion, or a negatively-charged ion. If it loses one or more electrons it is called a cation, or a positively-charged ion.
searcyina|Points 52|

User: Most molecules that contain carbon are _____.

Weegy: Most molecules that contain carbon are organic compound.
rathipearl|Points 207|

User: Helium has an atomic number of two, so its outer energy level is full. Helium is considered _____.

Weegy: Helium has an atomic number of two, so its outer energy level is full. Helium is considered neutral.
jeifunk|Points 9912|

User: Zero on a pH scale is very _____, and 14 on a pH scale is very _____.

User: ADP + P + EATP

User: 1. Na++ Cl-? NaCl reversible reaction 2. CCl4? C + 2Cl2 decomposition reaction 3. H+Cl-+ Na+OH-? Na+Cl-+ H2O synthesis reaction 4. ADP + P + EATP exchange reaction

Weegy: This is a type of neutralization reaction in which NaOH dissociates into Na+ and OH- ions while HCl dissociates into H+ and Cl- ions.The H+ and OH- ions react together to form H2O ie. [ [ water. H+ + OH- - - - -> H2O.This is the real reaction of neutralization. The remaining Na+ ion and Cl- ion form an ionic bond to form NaCl. Yes this eqn. is balanced coz the no. of Na,O,H &Cl atoms on both sides is equal. NaOH and HCl ===>Reactants NaCl and H2O ===>Products ] ]
ephraimzRN|Points 2278|

User: Fluorine has seven electrons in its outer energy level. According to the octet rule, _____.

User: Fluorine has seven electrons in its outer energy level. According to the octet rule, _____. it wants to take on another electron it wants to give up an electron its outer energy level is full

Weegy: Fluorine has seven electrons in its outer shell. According to the octet rule, it wants to take on another electron ]
carl1980|Points 302|

User: The bond formed when electrons are shared is called a(n) _____.

Weegy: Whats your question about electrons?
rldavis1983|Points 508|

User: The bond formed when electrons are shared is called a(n) _____. ionic bond hydrogen bond covalent bond

User: Which of the following properties of carbon give it particular importance to life? It's very cohesive and adhesive. It can form polymers like carbohydrates, lipids, proteins, and nucleic acids. It can regulate temperature. Decomposition of molecules can occur readily, releasing needed energy.

Weegy: The answer is all of them except for regulating temperature. D.Decomposition of molecules can occur readily, releasing needed energy.
Princess Mel|Points 300|

User: The atomic mass of an element whose atoms consist of seven protons, eight neutrons, and seven electrons is _____.

User: The atomic mass of an element whose atoms consist of seven protons, eight neutrons, and seven electrons is _____. 7 14 15 22

User: Biochemistry is the study of _____.

Weegy: The branch of science concerned with the chemical and physicochemical processes that occur within living organisms.
taben29|Points 777|

User: In general, life needs to maintain a pH level between _____.

User: The atomic number is the _____.

User: The atomic number is the _____. atomic mass number of neutrons protons plus the neutrons number of protons

Weegy: The number of protons plus the number of neutrons equals the: atomic mass.
cailabrown|Points 407|

User: In a reverse reaction, products are formed from reactants and reactants are formed from products. When they yield the same amount, _____.

Weegy: catalyst. catalyze; catalysis. A substance that increases the rate of a chemical reaction, without being consumed or produced by the reaction. Catalysts speed both the forward and reverse reactions, without changing the position of equilibrium*. [ Enzymes* are catalysts for many biochemical reactions. ]
MrG|Points 4101|

User: In a reverse reaction, products are formed from reactants and reactants are formed from products. When they yield the same amount, _____. chemical equilibrium is reached it is called the law of mass action activation energy is released

Weegy: b.it is called the law of mass action
amie12wyn|Points 90|

User: Positive ions are called _____, and negative ions are called _____.

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Asked 6/12/2013 2:07:44 PM
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