Al, Si, P, S, Cl and Ar have 1, 2, 3, 4, 5 and 6 electrons respectively in the 3p (valence orbitals).
However all elements after Argon have completely filled 3p orbitals though 3p is not the valence orbital.
Chromium has an atomic number of 24, its last sublevel ends with 3d^6
so therefore, Vanadium with the atomic number of 23 has a sublevel of 3d^5 (element with five, 3p electrons)
In an unexcited state, the element is silicon.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
He has an electron configuration of s block. But because it has gained the noble gas configuration, it is located in the p block.
Each column will generally have the symbol of the element (sometimes name of the element also), the atomic number, the mass number, the state in which the element is present at room temperature. Some periodic table will also have the electronic configuration or electronegativity.
Least to highest
The element calcium, or Ca, is located in group 2, period 4 of the periodic table. Therefore, its electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2. This can also be written as [Ar] 4s2, because the beginning of that electron configuration is the same as argon's. The 42 you mentioned in your question is referring to a specific isotope of calcium and has nothing to with the electron configuration.
An element's electron configuration determines its location (group) in the periodic table. It tells us how many valence electrons (s and p sublevel).
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
The electronic configuration for aluminum is 1s22s22p63s23p1 .
Mg
Periodic table can be used to sketch an element. Its configuration can be assumed from its position.
Depending on the editor of the periodic table: name, symbol, atomic number, density, electron configuration, group, period, melting point, boiling point etc.
Electron configuration is the arrangement of elements according to their increasing atomic numbers whiles period is the arrangement of elements according to the increasing number of valence electrons.
The electron configuration of gallium is 1s22s22p63s23p64s23d104p1 The shorter version is [Ar]4s23d104p1
The correct electron configuration of indium (In) is [Kr]4d105s25p1. Refer to the related links for a printable Periodic Table with electron configurations.
because of the electron configuration are different
Shouldn't you do the homework yourself. Teach your teacher!