For each electronic configuration given, choose the electronic configuration of the element that would match its chemical properties. (1) 1s22s22p63s2 a. 1s22s22p63s23p3b. 1s22s22p63s23p64s23d104p6c. 1s22s2d. 1s22s22p3(2) 1s22s22p63s23p64s23d104p6 a.1s22s22p63s23p3 1s22s22p63s2 1s22s2 1s22s22p6(c) 1s22s22p3 1s22s22p63s23p64s23d104p6 1s22s22p6 1s22s2 1s22s22p63s23p3

The electronic configuration is the arrangement of the electrons of an atom or a molecule in its molecular or atomic orbitals.

The electronic configuration follows the Aufbau principle, Pauli exclusion rule and Hund's rule.

The correct answers are:

The correct explanation is:

1. The electronic configuration of Beryllium can be written as: [He] 2s².The atomic number present in the element is 4, while a number of neutrons are 5, shell structure for beryllium can be written as [2,2].

2. The electronic configuration of neon is: [He]2s²2p⁶.

The number of electrons present in the shells of neon is 2 and 8. It is a noble gas.

3. The electronic configuration of magnesium will be: [Ne] 3s² the atomic number of magnesium is 12.

It is an alkaline earth metal of Group 2 (IIa). It is the lightest structural metal.

4. Phosphorus has 15 electrons. Phosphorus is a diamagnetic element. The electronic configuration of phosphorus is: [Ne] 3s² 3p³.

5. The atomic number of nitrogen is 7 and has 5 valence electrons.

The configuration of nitrogen is: [He] 2s²2p³

6.Electron configuration of krypton is: [Ar] 3d¹⁰ 4s² 4p⁶.

The atomic number is 36 and the distribution of electrons per shell is 2,8,18,8.

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1s22s22p63s2- Magnesium

1s22s22p63s23p3- phosphorus

1s22s22p63s23p64s23d104p6- krypton

1s22s2- Beryllium

1s22s22p6- neon

1s22s22p3- nitrogen

Explanation:

The identity of an element is deducible from its electronic configuration by looking out for the outermost shell configuration and counting the total number of electrons present. for example; phosphorus 15 electrons and an outermost shell configuration of ns2 np3. Any electronic configuration written above which reflects these characteristics must belong to phosphorus.

it means there are 3 atoms of oxygen