Question

which electron configuration represents the electrons in an atom of sodium in the ground state at STP

Answer 1

Answer : The  ground state electronic configuration of sodium will be,

$1s^22s^22p^63s^1$

Explanation :

Electronic configuration : It is defined as the representation of electrons around the nucleus of an atom.  

Number of electrons in an atom are determined by the electronic configuration.

Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.

The ground state electronic configuration of sodium will be,

$1s^22s^22p^63s^1$

The total number of electrons = [2 + 2 + 6 + 1] = 11

Answer 2

The written representation of electrons in its shell is called electronic configuration.

In this method, the number of electrons is placed in specific orbits. There are 4 different orbits which are :-

• S orbit
• P orbit
• D orbit
• F orbit

All the electrons are arranged in these orbits. The number of electrons present in an atom is called the atomic number.

Therefore, the number of atoms present in sodium is 11 and the electronic configuration of the sodium is $1s^{2}2s^{2}2p^{6}3s^{1}$

Therefore, The electronic configuration of the sodium atom is $1s^{2}2s^{2}2p^{6}3s^{1}$

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https://brainly.com/question/21940070