Problem: An atom has the electron configuration 1s22s22p63s23p3. How many valence electrons does the atom have?

FREE Expert Solution
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FREE Expert Solution

In this problem, we are asked to determine the number of valence electron for a given electron configuration


Let's first identify the element, to do this, you’ll have to identify the atomic number of that element. Recall that every single element in the periodic table has a corresponding atomic number.

The atomic number of an element is always equal to the number of protons of that element. And when the element is neutral (charge = 0), the number of protons is equal to the number of electrons.

Neutral element:          Atomic number = # protons = # of electrons

89% (391 ratings)
Problem Details

An atom has the electron configuration 1s22s22p63s23p3. How many valence electrons does the atom have?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Valence Electrons of Elements concept. You can view video lessons to learn Valence Electrons of Elements Or if you need more Valence Electrons of Elements practice, you can also practice Valence Electrons of Elements practice problems .

How long does this problem take to solve?

Our expert Chemistry tutor, Alisa took less than a minute to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Rupnik's class at LSU.