Question

complete the table below. an example of how to fill out the table is in the first row. for the configuration answers, you can not put superscripts (exponents) and thats ok. for the configuration answers, make sure to put spaces after the number of electrons in the orbital. example of the wrong way to answer: 1s22s22p63s23p6 example of the correct way to answer: 1s2 2s2 3s2 3p6 element full electron configuration noble gas configuration fluorine 1s2 2s2 2p5 he 2p5 phosphorous type your answer type your answer tin type your answer type your answer copper type your answer type your answer technetium type your answer type your answer strontium type your answer type your answer neon type your answer type your answer barium type your answer type your answer iodine type your answer type your answer

Explanation:

Step1: Recall electron - filling rules

Use the Aufbau principle, Pauli - exclusion principle, and Hund's rule to write electron configurations.

Step2: Determine atomic numbers

Find the atomic numbers of the elements to know the number of electrons. Phosphorus (P) has atomic number 15, Tin (Sn) has atomic number 50, Copper (Cu) has atomic number 29, Technetium (Tc) has atomic number 43, Strontium (Sr) has atomic number 38, Neon (Ne) has atomic number 10, Barium (Ba) has atomic number 56, Iodine (I) has atomic number 53.

Step3: Write full electron configurations

• Phosphorus: 1s2 2s2 2p6 3s2 3p3
• Tin: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p2
• Copper: 1s2 2s2 2p6 3s2 3p6 4s1 3d10 (due to d - subshell stability)
• Technetium: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d5
• Strontium: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2
• Neon: 1s2 2s2 2p6
• Barium: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2
• Iodine: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p5

Step4: Write noble - gas core configurations

• Phosphorus: [Ne] 3s2 3p3
• Tin: [Kr] 5s2 4d10 5p2
• Copper: [Ar] 4s1 3d10
• Technetium: [Kr] 5s2 4d5
• Strontium: [Kr] 5s2
• Neon: [He] 2s2 2p6
• Barium: [Xe] 6s2
• Iodine: [Kr] 5s2 4d10 5p5

Answer:

Element	Full electron configuration	Noble gas configuration
Tin	1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p2	[Kr] 5s2 4d10 5p2
Copper	1s2 2s2 2p6 3s2 3p6 4s1 3d10	[Ar] 4s1 3d10
Technetium	1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d5	[Kr] 5s2 4d5
Strontium	1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2	[Kr] 5s2
Neon	1s2 2s2 2p6	[He] 2s2 2p6
Barium	1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2	[Xe] 6s2
Iodine	1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p5	[Kr] 5s2 4d10 5p5