What makes the electron configuration of an atom stable?
1 Answer. Atoms are stable when they have eight valence electrons (two in the case of hydrogen). This is called having an octet. Only the noble gases have an octet of valence electrons naturally (two for helium, which is called a duet).
What is the most stable arrangement of electrons for an atom?
Atoms are at their most stable when their outermost energy level is either empty of electrons or filled with electrons. Sodium atoms have 11 electrons. Two of these are in the lowest energy level, eight are in the second energy level and then one electron is in the third energy level.
How do atoms become the most stable?
Some atoms become more stable by gaining or losing an entire electron (or several electrons). When they do so, atoms form ions, or charged particles. Electron gain or loss can give an atom a filled outermost electron shell and make it energetically more stable.
What makes an atom stable in chemistry?
The stability of atoms depends on whether or not their outer-most shell is filled with electrons. If the outer shell is filled, the atom is stable. Atoms with unfilled outer shells are unstable, and will usually form chemical bonds with other atoms to achieve stability.
What is a stable electron configuration quizlet?
What is a stable electron configuration? In a stable electron configuration, the highest occupied energy level is filled with electrons.
What makes a molecule stable?
If a molecule has more electron density on more electronegative elements, it's typically more stable. Nature tends to like symmetry at a microscopic level. Thus molecules tend to be more stable when in the most symmetrical shape possible. (There are MANY exceptions to this, but it's a good general principle.)
Which of the following has most stable configuration?
Answer: he most stable electron configuration is that of a noble gas, due to the fact that its valence shell is filled. For helium, that means two valence electrons (a duet) in the 1s sublevel, and for the rest it means eight valence electrons (an octet) in the outermost s and p sublevels.
What do you mean by stable configuration?
(a) Stable electronic configuration means an atom in which the outermost (valence) shell is complete.
What determines whether an atom is stable or unstable?
An atom is stable if the forces among the particles that makeup the nucleus are balanced. An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy. Instability of an atom's nucleus may result from an excess of either neutrons or protons.
Which of the following groups contain elements with stable electron configurations?
Stable Electron Configuration: All of the elements in group 18, also known as the noble gases, have stable electron configuration because they reach the maximum number of electrons in their shells.
What happens to the charge on atoms when they form a polar covalent bond?
This unequal distribution of electrons is known as a polar covalent bond, characterized by a partial positive charge on one atom and a partial negative charge on the other. The atom that attracts the electrons more strongly acquires the partial negative charge and vice versa.
What does it mean for an element to become stable?
A stable atom is an atom that has enough binding energy to hold the nucleus together permanently. An unstable atom does not have enough binding energy to hold the nucleus together permanently and is called a radioactive atom.
What is stable configuration?
(a) Stable electronic configuration means an atom in which the outermost (valence) shell is complete.
Which of the following is most stable electron?
Answer: he most stable electron configuration is that of a noble gas, due to the fact that its valence shell is filled.
What is stable electronic configuration with example?
According to the periodic table, some examples of stable electron configurations are: Helium. Neon {10 (2 + 8) electrons} Argon {18 (2 + 8 + 8)}
What makes a stable molecule?
If I say that a certain molecule is “stable”, I might mean any of a number of things: It's possible to make it, and it won't spontaneously fall apart. It's possible to isolate a pure sample of the substance. It won't react with other things.
How do you know if an element is stable?
The stability of an element is determined on the number of electrons in its outermost energy level. This outermost energy level must first be maxed out in order to achieve stability.
Which group of the periodic table has the most stable electron configuration?
The noble gases The noble gases rarely form compounds. They have the most stable configuration (full octet, no charge), so they have no reason to react and change their configuration. All other elements attempt to gain, lose, or share electrons to achieve a noble gas configuration.
Which statement best describes what happens to the stability of hydrogen and oxygen atoms when they form bonds in a water molecule?
Which statement best describes what happens to the stability of hydrogen and oxygen atoms when they form bonds in a water molecule? By sharing electrons, both the hydrogen and oxygen atoms fill their outer energy levels and become more stable.
What happens to the charge on atoms when they form a polar covalent bond quizlet?
What happens to the charge on atoms when they form a polar covalent bond? When atoms form a polar covalent bond, they gain some partial electric charge. The atom with the greater attraction for electrons has a partial negative charge.
What happens covalent bonding?
A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are simultaneously attracted by the two atomic nuclei. A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions.
Which of the following configuration is stable?
Here, the electronic configuration 3d54s1 is most stable as both the orbitals are half filled.
What do you understand by stable configuration?
A stable electron configuration refers to an atom in which the outermost (valence) shell is complete. An unstable electron configuration refers to an atom in which the outermost (valence) shell is incomplete.
Which structure is most stable?
- ↑
- ∴ octet complete.
- ∴ most stable.
What does the stability of a molecules depend on?
The stability of a complex particle (ion or molecule) in solution is determined by the nature of the central atom and the ligands.
What makes an element stable?
A stable atom has a net charge of 0. In other words, it has an equal number of protons and electrons. The positive protons cancel out the negative electrons. When the number of electrons does not equal the number of protons, the atom is ionized.
What is atom stability?
An atom is stable because of a balanced nucleus that does not contain excess energy. If the forces between the protons and the neutrons in the nucleus are unbalanced, then the atom is unstable. Stable atoms retain their form indefinitely, while unstable atoms undergo radioactive decay.
Which are the most stable atoms?
But, what about helium and other noble gases? They are considered the most stable elements in the whole periodic table.
Do oxygen atoms become more stable or less stable when oxygen forms compounds?
Do oxygen atoms become more stable or less stable when oxygen forms compounds? They become more stable because they gain or share valence electrons giving each oxygen atom a set of 8 valence electrons. They change because the number of valence electrons changes in a pattern that repeats in each period.
What happened to the charge on atoms when they form a polar covalent bonds?
This unequal distribution of electrons is known as a polar covalent bond, characterized by a partial positive charge on one atom and a partial negative charge on the other. The atom that attracts the electrons more strongly acquires the partial negative charge and vice versa.