Question

questions:
a. what is the atomic number of chlorine (cl)? ______
b. what is the atomic number of tungsten (w)? ______
can you tell from your own periodic table exactly how
______
______
how will you use your periodic table to find the numbe
______
______
omplete the following table:
name | symbol | atomic number
hydrogen | h | 1
sodium | na |

Explanation:

Part a

Step1: Recall atomic number of Cl

The atomic number of an element is the number of protons in its nucleus. For chlorine (Cl), from the periodic table, we know its atomic number.
<The atomic number of Cl is 17.>

Part b

Step1: Recall atomic number of W

For tungsten (W), referring to the periodic table, we find its atomic number.
<The atomic number of W is 74.>

Answer:

a. 17
b. 74