1 Answer. The 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 is the electron configuration of barium?
[Xe] 6s2
1 Answer. The 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.
How many stable electrons does barium have?
To achieve a noble-gas electron configuration, an atom of barium has to give up two electrons and become the positively charged ion represented as…
1 Answer. Stefan V. If you are referring to a neutral atom, then Vanadium (V) has that particular electron configuration.
What is the electron configuration for lithium?
1s²2s¹
What is the electron configuration of polonium?
[Xe] 6s2 4f14 5d10 6p4
How do you know if an electron configuration is stable?
Elements that have the same number of valence electrons often have similar chemical properties. Electron configurations can also predict stability. An atom is at its most stable (and therefore unreactive) when all its orbitals are full. The most stable configurations are the ones that have full energy levels.
What is the electronic configuration of barium 56?
Barium atoms have 56 electrons and the shell structure is 2.8. 18.18. 8.2. The ground state electron configuration of ground state gaseous neutral barium is [Xe].
How many electrons does barium have in its outer shell?
A barium (Ba) atom has 2 valence electrons. Valence electrons are the outermost electrons in an atom, which affect how atoms might react with one…
How many electrons must be gained or lost of barium to achieve a stable electron configuration?
Answer. Answer: The number of electrons that must be gained or lost by the following atoms to achieve a stable electron configuration is : Barium(Ba) ” 2 electrons lost.
What element has the electron configuration?
What element has the electron configuration 1s22s22p63s2?
The electron configuration 1s22s22p63s23p2 is the element Silicon.
Which atom has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d2?
So, an antimony atom with charge +2 has an electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p1.
When forming a stable ion lithium achieves the configuration of?
Li atoms readily give up one electron to form positively charged, Li+ ions. These ions have the same stable electron configuration as the noble gas helium.
How do you find the electron configuration?
To calculate an electron configuration, divide the periodic table into sections to represent the atomic orbitals, the regions where electrons are contained. Groups one and two are the s-block, three through 12 represent the d-block, 13 to 18 are the p-block and the two rows at the bottom are the f-block.
What is electronic configuration of lithium has three electronics?
The electronic configuration for lithium is written as 2.1 (showing that lithium atoms have three electrons, two in the first shell and one in the second shell).
Is polonium brittle or malleable?
Polonium is a metal element so it is a good thermal conductor and a good electrical conductor. Polonium is a shiny solid at standard temperature and pressure and has a high melting point. Polonium is malleable. Polonium is sonorous.
Which pair has unstable electronic configuration?
The noble gases have these configurations. Unstable configuration ” Other elements’ atoms have an insecure electrical arrangement. Their valence shell isn’t finished.
What is the difference between stable and unstable electronic configuration?
Answer: An stable electronic configuration refer to an atom in which the outermost shell is complete. Whereas an unstable electronic configuration refers ta an atom in which the outermost shell is incomplete.
Which elements on the periodic table have a stable electron configuration already?
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.
What is the Unabbreviated electron configuration for bromine?
[Ar] 4s² 3d¹⁰ 4p⁵
What is the outermost shell of barium?
Does barium gain or lose electrons?
Answer and Explanation: A barium (Ba) atom will lose electrons because it is a metal and metals tend to lose electrons since they have low ionization energies.
How many electrons must be gained by S to achieve a stable electron configuration?
The valence shell (the 3s and 3p sublevels) contains six electrons, but it needs eight to become stable. Think of the octet rule. Therefore a sulfur atom will gain two electrons to form the sulfide anion with a charge of 2′ , with the symbol S2′ .
How many electrons do barium have to lose in?
Therefore, you can conclude that a neutral barium atom must lose two electrons in order to gain a 2+ charge.
What is the electronic configuration of alkali metals?
General electronic configuration of alkali metal is [noble gas] ns1 and that of alkaline earth-metal is [noble gas]ns2.
What are the 3 principles of electron configuration?
When assigning electrons to orbitals, we must follow a set of three rules: the Aufbau Principle, the Pauli-Exclusion Principle, and Hund’s Rule.
What element has an electron configuration of 1s2?
What element is 1s2 2s2 2p6 3s2 3p6 4s2 3d5?
Which element is represented by the electron configuration 1s22s22p2?
What is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6?
Which element has the following electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 quizlet?
Silver has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d10.
Which element has an electron configuration ending in 4d2 quizlet?
The electron configuration of potassium is _____. 1s2 2s2 2p6 3s2 3p6 4s1. Which element has an outer (valence) electron configuration of 4d2? Zr.
How an atom of alkali metals achieve a stable electron arrangement of inert gas?
The atoms of the Group 1 and 2 elements will lose their valence electrons in order to achieve the electron configuration of the noble gas in the previous period, and the atoms of the Groups 13-17 elements will lose, gain, or share electrons in order to achieve the electron configuration of the noble gas at the end of …
Why is the electron configuration of most elements unstable?
Unstable configuration Atoms of other elements have unstable electronic configuration. Their valence shell is incomplete. They tend to attain stable configuration of the nearest inert gas by gaining or losing electrons or by sharing electrons.
Which item generally obtains a stable configuration by sharing electrons?
Metals lose valence electrons to obtain a stable configuration. Nonmetals gain or share electrons to obtain a stable configuration.
How does electron configuration changes?
In a period, the inner core shell remains same and the valence electrons in valence shell goes on increasing from left to right. The number of shells is same.
How do you write configuration?
When writing an electron configuration, first write the energy level (the period), then the subshell to be filled and the superscript, which is the number of electrons in that subshell. The total number of electrons is the atomic number, Z.
How do you write the shorthand electron configuration?
In shorthand electron configuration, the electron configuration starts with the symbol of the noble gas in the previous period, followed by the additional configuration of the electrons for the given element. For example, aluminum has the atomic number 13, which is the number of protons in the nuclei of its atoms.
What is the electron configuration for lithium Brainly?
Answer: 1s 2 2s 1. Explanation: Lithium is the third element with a total of 3 electrons.
How many electrons does cr3+ have?
The atomic number of Chromium is Z=24 , therefore a Cr atom possesses 24 electrons.
What is the electron configuration of polonium?
[Xe] 6s2 4f14 5d10 6p4
Is polonium hard or soft?
Atomic volume:22.23 cm3/molStructure:simple cubicHardness:”Specific heat capacity0.12 J g-1 K-1 0.12Heat of fusion13 kJ mol-1
What is polonium reactive to?
Under controlled conditions polonium will react with chlorine, bromine and iodine to form tetrahalides. Polonium will dissolve in concentrated hydrochloric acid, sulphuric acid and nitric acid, to form solutions containing Po(II).
Which electronic configuration is stable?
Here, the electronic configuration 3d54s1 is most stable as both the orbitals are half filled.