Question

if the electronic configuration of an atom is 2,8,2. calculate the total number of electrons and write name of the atom​

Answer 1

Answer:

total electrons are 12

atom name is Magnesium (Mg)

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Answer 2

Answer:

12 and Magnesium-

Explanation:

Electronic configuration-Electronic configuration, also called electronic structure or electron configuration, the arrangement of electrons in orbitals around an atomic nucleus. The electronic configuration of an atom in the quantum-mechanical model is stated by listing the occupied orbitals, in order of filling, with the number of electrons in each orbital indicated by superscript. In this notation, the electronic configuration of sodium would be 1s22s22p63s1, distributed in the orbitals as 2-8-1. Often, a shorthand method is used that lists only those electrons in excess of the noble gas configuration immediately preceding the atom in the periodic table. For example, sodium has one 3s electron in excess of the noble gas neon (chemical symbol Ne, atomic number 10),

Solving way-$2+8+2=12$

And 12 is the atomic number of Magnesium.

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