An atom's configuration based on its number of electrons ends at 3p3. Another atom has nine more electrons. Starting at 3p, what is the remaining configuration?

3p64s23d4

3p34s23d7

3p63d44s2

3p33d74s2

A) 3p64s23d4

Explanation:

First off, it's important to understand the following concepts;

An atom's electron configuration is a numeric representation of its electron orbitals. The S-orbital takes a maximum of two electrons, p-orbital take a maximum of six electrons, d-orbital takes a maximum of 10 electrons, and so fourth.

The electron filling follows this pattern; 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p ...

An electron configuration can quickly and simply tell a reader how many electron orbitals an atom has as well as the number of electrons populating each of its orbitals.

Now back to the question, since the atom's configuration ends at 3p3 and we need to add nine more electrons,

1) P orbital can only accommodate 6 electrons, so we add three electrons to the 3p3 to make it 3p6 leaving us off with (9-3 = 6 electrons left).

2) The next orbital is the 4s. The s orbital can only take in 2 electrons so we add two electrons leaving us with 4 (6-2) electrons. we have 4s2 here.

3) The next orbital on the order is 3d. Since the d orbital can take in op to 10 electrons, it means we can add the remaining 4 electrons to give us 3d4.

The final electronic configuration from 3p is now given as;

3p64s23d4

Answer;

3p34s23d7

Explanation; Electrons in an atom are contained in specific energy levels that are different distances from the nucleus. Within each energy level is a volume of space where specific electrons are likely to be located, called orbitals. Orbitals are of different shapes, denoted by a letter (s, p, d, f, g). S-orbital takes a maximum of two electrons, p-orbital take a maximum of six electrons, d-orbital takes a maximum of 10 electrons, and so fourth. The electron filling pattern takes; 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p ... Therefore; in this case after 3p3, we then go to 4s, with 2 electrons, then 3d which takes 7 electrons.