Question

type the correct answer in each box. the atomic number of sodium (na) is 11. the element phosphorous (p) is the fourth element to the right of sodium in the periodic table. the atomic number of phosphorus is it has zero charge because it has electrons.

Explanation:

Step1: Determine atomic number of phosphorus

The atomic number increases by 1 for each element to the right in the periodic table. Sodium has atomic number 11 and phosphorus is 4 elements to the right. So, 11 + 4.
$11+4 = 15$

Step2: Relate charge to electrons

For a neutral atom, the number of electrons equals the atomic number. Since phosphorus has a zero - charge (is neutral), the number of electrons is equal to its atomic number.

Answer:

15; 15