Question

use the periodic table to identify the name or atomic number for each element below. (give the name, not the chemical symbol, for each element) hafnium: atomic number : atomic number 15 : atomic number 45 osmium: atomic number magnesium: atomic number done

Explanation:

Step1: Locate hafnium on periodic table

Hafnium has atomic number 72.

Step2: Find element with atomic number 15

The element with atomic number 15 is phosphorus.

Step3: Identify element with atomic number 45

The element with atomic number 45 is rhodium.

Step4: Determine atomic number of osmium

Osmium has atomic number 76.

Step5: Find atomic number of magnesium

Magnesium has atomic number 12.

Answer:

hafnium: 72
phosphorus: 15
rhodium: 45
osmium: 76
magnesium: 12