Cadmium normally haselectrons, butonly haselectrons.

The normal electron configuration foris as follows:

Since the cadmium is losingelectrons, it must lose them from the highest energy shell. In this case, this means the cadmium will be losing its electrons in.

Thus, the electron configuration foris.

The normal electron configuration foris as follows:

Since it is losingelectrons, the element must lose the electrons from the highest energy shell first. Thus, the element loseselectrons fromandelectron for.

The electron configuration foris then

首先找到惰性气体的核心。钨,this will be xenon as this is the noble gas that is closest to it.

The normal electron configuration foris as follows:

Recall that electrons are lost in the highest energy level subshell first.

has lostelectrons. It will lose the first two electrons from theshell, then it will loseelectron from theshell, giving it the following electron configuration:

首先找到惰性气体的核心。For iron, this will be argon as this is the noble gas that is closest to it.

Next, recall that since theorbitals are higher in energy that theorbitals, electrons will be lost from theorbital first.

The normal electron configuration foris as follows:

has lostelectrons. It will lose the first two electrons from theshell, then it will loseelectron from theshell, giving it the following electron configuration:

Electrons of an atom are located within electronic orbitals around a nucleus. The electrons of each atoms have their own specific energy level called principal energy level. When electrons are excited by absorbing energy the electrons can jump to a high energy level. Then when an electron drops back to a lower energy level the electron emits the energy. Therefore, when an atom moves from a lower energy state to a higher energy state. the electrons absorb energy.

Each element has a unique electron configuration that represents the arrangement of electrons in orbital shells and sub shells. There are four different orbitals,s, p, d,andfthat each contain two electrons. Thep, d, andforbitals contain subshells that allow them to hold more electrons. The orbitals for an element can be determined using the periodic table. Thes-block consists of group 1 and 2 (the alkali metals) and helium. Thep-block consists of groups 3-18. Thed-block consists of groups 3-12 (transition metals), and thef-block contains the lanthanides and actinides series. Using this information we can determine the full electron configuration of sodium.

To do this, start at hydrogenlocated at the top left of the periodic table. Hydrogenand heliumare in the firstsorbital and account for. Next, we move to the seconds-orbital that contains lithium (Li) and beryllium (Be), which accounts for. Then we move to boron, carbon, nitrogen, oxygen, fluorine, and neon, which are all in thep-block and account for. There is no1porbital. Finally, we are at sodium, which is in thes-block and accounts for. Therefore the full electron configuration of sodium is.

Each element has a unique electron configuration that represents the arrangement of electrons in orbital shells and subshells. There are four different orbitals,s, p, d,andfthat each contain two electrons. Thep, d,andforbitals contain subshells that allow them to hold more electrons. The orbitals for an element can be determined using the periodic table. Thes-block consists of group 1 and 2 (the alkali metals) and helium. Thep-block consists of groups 3-18. Thed-block consists of groups 3-12 (transition metals), and thef-block contains the lanthanides and actinides series. Using this information we can determine the electron configuration of iodine in nobel gas configuration.

The nobel gas configuration is a short hand to writing out the full electron configuration. To do this, start at the nobel gas that come before the element of interest. In the case of iodine, the nobel gas is krypton. Therefore, the electron configuration will begin with, and this will be the new starting place for the electron configuration.

After krypton comes thes-block, which contains elements with the atomic numbers 37 and 38 that account for. Then comes thed-block containing elements 39-48 that account for. Finally comes thep-block containing elements 49-53 that account for. Therefore, the electron configuration of iodine in nobel gas configuration is.