What is the charge on the strontium ion?

Question

Jules Bruno · Accepted Answer

Figure out the ground state configuration of Sr and determine the possible ion form for Sr by adding or removing electrons from it.You can determine the ground-state electron configuration of Strontium (Sr) by referring to the periodic table and locating the position of Sr in the periodic table.Ground-state means that the element is in its lowest energy form (not in excited state). Sr has no charge which means that no electrons are removed or added in the atom.[readmore]You will see in the above illustration of the periodic table that Sr is in Period 5, Group 2A, and s block.Before reaching Sr, you will pass through the atomic orbitals 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5sIn a neutral atom:Atomic number = # of protons = # of electronsSr: atomic number = 38 → 38 protons & 38 electronsDistribute electrons in the atomic orbitals:Recall:s orbital → can hold a maximum of 2 electronsp orbitals → can hold a maximum of 6 electronsd orbitals → can hold a maximum of 10 electronsf orbitals → can hold a maximum of 14 electronsFill up the orbitals with electrons:Write the electron configuration from the lowest energy level to the highest energy level:Sr: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p­6 5s2For the ion form of strontium, notice that we can remove up to two electrons from the highest orbital which is 5s Removal of two electrons will form a charge of +2, Sr2+Electron configuration will appear as:Sr2+: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p­6 5s2Sr2+: 1s2 2s2 2p6 3s2 3p6 3d10 4p6

Problem: What is the charge on the strontium ion?

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Problem: What is the charge on the strontium ion?

FREE Expert Solution

Problem Details

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