S
It contains 10 protons and 10 electrons (no. of protons =no. of electrons in ground state) Number of neutrons=Mass number of element- number of protons =19-10 =9
An atom of fluorine has 9 electrons in total. Electrons are equal to protons when the atom isn't an ion, and the number of protons is also the atomic number of the element, so you just need to know the atomic number to find out the number of electrons or protons.
* Ground state electron configuration:[Ar].3d10.4s2.4p6 so...4s and 4p
Phosphorus has three unpaired electrons in its ground state.
Sulphur Symbol 'S'. Atomic Number = 16. Atomic weight = 32 Nucleus = 16 Protons & 16 Neutrons. Electrons = 16 in 3 Energy levels Shell 1 or 'K' = 2 electrons Shell 2 or 'L' = 8 Shell 3 or 'M' = 6
The 4d subshell in the ground state of atomic xenon contains 10 electrons.
The element with the lowest atomic number that has a complete d subshell at its ground state is Titanium (element 22). In its ground state, Titanium's electron configuration is [Ar] 3d2 4s2, which means the 3d subshell is completely filled with 2 electrons.
It contains 10 protons and 10 electrons (no. of protons =no. of electrons in ground state) Number of neutrons=Mass number of element- number of protons =19-10 =9
Manganese (Mn) contains 3d5 electrons in its ground state electron configuration.
The element with the lowest atomic number that contains a half-filled d subshell at its ground state is scandium (atomic number 21). The electron configuration of scandium at ground state is [Ar] 3d^1 4s^2, where the 3d subshell is half-filled with one electron.
For the ground state electron configuration of an element, we look at the filling of orbitals up to that element's atomic number. Tantalum (Ta) has an atomic number of 73, belonging to the transition metals, and has a ground state electron configuration of [Xe] 4f14 5d10 6s2 6p6 6d3 7s2. Counting the number of electrons in the partially filled orbitals (5d and 6d), there are 3 unpaired electrons.
The element with that electron configuration is Iron.
Rhodium
An elements atomic number is important because it tells you how many protons are in the nucleus of the atom, and how many electrons are orbiting the nucleus in the ground state.
No element has this as the ground state. Gadolinium has the right number of electrons but its ground state is [Xe] 4f7 5d1 6s2. The second number in each group should be a superscript.
The ground state electron configuration for the element with the atomic number corresponding to the keyword "fe" is Ar 3d6 4s2.
It tells us that:How many protons the atom hasHow many electrons the atom has (when it is in non-excited, ground state)It identifies the element itself