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Why is argon the last element in the period?
Because it has completely filled valence orbitals.
How many orbitals are completely filled in an atom of sodium?
Nitrogen (N) is atomic number 7, so has 7 electrons in the ground state. The configuration is1s2 2s2 2p3. From this, one can see that the 1s is full, as is the 2s. So, the number of completely filled orbitals is TWO.
Why helium exist in mono atomic state?
Helium has completely filled orbitals, is stable and is not reactive. Hence they exist as mono atomic
Why potassium and Helium not likely to form and ionic bond?
helium has completely filled orbitals and does not react with any element.
When elements are stable?
Elements are stable when they have completely filled (or half filled) orbitals.
How many orbitals are completely filled in an atom whose electron configuration is 1s2 2s2 2p6 3s1?
There are two completely filled orbitals in this atom: the 1s orbital with 2 electrons and the 2p orbitals with 6 electrons. The 2s orbital and 3s orbital are not completely filled.
Why the size of atom does not decrease regularly in a period?
pagal u tell
Why is helium atomic number 2?
Helium has an atomic number of 2 because it has 2 protons in its nucleus. Atomic number corresponds to the number of protons in an atom, which determines its chemical properties and its place in the periodic table.
The order in which atomic orbitals are filled is based on what factor?
It is based on many factors, but the easiest to understand is ENERGY. The orbitals in which the electron has the lowest energy are filled FIRST.
How many s orbitals are filled with electrons in a cadmium atom?
In a cadmium atom, all 27 s orbitals are filled with electrons. Cadmium has 48 electrons, and the s sublevel can hold a total of 2 electrons per orbital, so 27 orbitals are needed to accommodate all the electrons.
How many orbitals are completely filled in an atom whose electron configuration is 1s2 2s2 2p3?
There are two orbitals that are completely filled in this atom: the 1s orbital with 2 electrons (1s2) and the 2s orbital with 2 electrons (2s2). The 2p orbital is not completely filled, as it should have a total of 6 electrons (2p6).
How many orbitals would be filled in an atom with an atomic number 17?
An atom with an atomic number of 17 (chlorine) would have 3 energy levels filled, which corresponds to 3 orbitals (1s, 2s, 2p). The 1s orbital would be filled with 2 electrons, the 2s orbital with 2 electrons, and the 2p orbital with 3 electrons, for a total of 7 electrons.
