What elements valence electrons are located in 4s2 4p3 a. v b. as c. c d. nb

b. As.

Step-by-step explanation:

The valence electron configuration is 4s²4p³.

The principal quantum number is 4, so the element is in Row 4.

The element has two 4s electrons and three 4p electrons.

Start at the far left of Row 4. Count two squares in the s block. Skip the d block (they are inner electrons). Count three squares in the p block.

That brings you to Element 33, As.

The element with electron configuration 4s²4p³ is As, arsenic.