Question

phase 1: identify information provided by the periodic table of elements. complete the following steps: 1 using oxygen as an example, label the information provided for elements in the periodic table. select verify to check answers 2 label the groups of essential elements. select verify to check answers 3 referring to the periodic table, record information about the elements nitrogen (n), magnesium (mg), and phosphorus (p) in lab data

Explanation:

Step1: For oxygen in periodic table

Oxygen (O) has atomic number 8. It is in group 16 and period 2. Its symbol is O, atomic mass is approximately 16.00.

Step2: For groups of essential elements

Essential elements include:

• Group 1 (alkali - metals like sodium which is important for nerve function),
• Group 2 (alkaline - earth metals like calcium for bone health),
• Group 14 (carbon is the basis of organic compounds),
• Group 15 (nitrogen for proteins),
• Group 16 (oxygen for respiration),
• Group 17 (chlorine for maintaining osmotic balance).

Step3: For nitrogen, magnesium and phosphorus

• Nitrogen (N): Atomic number 7, in group 15, period 2, atomic mass about 14.01.
• Magnesium (Mg): Atomic number 12, in group 2, period 3, atomic mass about 24.31.
• Phosphorus (P): Atomic number 15, in group 15, period 3, atomic mass about 30.97.

Answer:

1. Oxygen: Atomic number 8, group 16, period 2, symbol O, atomic mass ~16.00.
2. Essential - element groups: Groups 1, 2, 14, 15, 16, 17 with various biological functions.
3. Nitrogen: Atomic number 7, group 15, period 2, atomic mass ~14.01; Magnesium: Atomic number 12, group 2, period 3, atomic mass ~24.31; Phosphorus: Atomic number 15, group 15, period 3, atomic mass ~30.97.