Chapter 16.3, Problem 12R

To determine

To Find: The atomic number, atomic mass, and the number of outer most electrons for each of the elements N, P, As, and Sb by using the periodic table.

Explanation of Solution

Introduction:

Atomic number of element = Number of protons

Atomic mass of element= number of protons+ number of neutrons

Number of neutrons= Atomic mass of element- number of protons

From the periodic table.

Element symbol	Element name	Atomic number	Atomic number	Number of outermost electrons
N	Nitrogen	7	14.001	5
P	Phosphorus	15	30.97	5
As	Arsenic	33	74.92	5
Sb	Antimony	51	121.76	5

Conclusion:

From the periodic table, element name, atomic number, atomic mass and outermost electrons are determined.