Question

question 4 (1 point)
which of the following elements is in the same period as phosphorus?
o a oxygen
o b nitrogen
o c magnesium
o d carbon

question 5 (1 point)
each period in the periodic table corresponds to a(n) _.
o a orbital
o b principal energy level
o c energy sublevel
o d suborbital

question 6 (1 point)
the modern periodic table is arranged in order of increasing atomic _.
o a number
o b charge
o c mass
o d radius

Explanation:

Question 4

• Phosphorus (\(P\)) is in period 3 of the periodic table.
• Magnesium (\(Mg\)) is also in period 3.
• Oxygen (\(O\)) is in period 2.
• Nitrogen (\(N\)) is in period 2.
• Carbon (\(C\)) is in period 2.

• In the periodic table, each period corresponds to a principal energy level.
• Orbitals are regions within energy levels.
• Energy sublevels are parts of principal energy levels.
• Sub - orbitals are not what periods correspond to.

• The modern periodic table is arranged in order of increasing atomic number.
• Atomic charge is not the basis of the modern periodic table arrangement.
• The early periodic table was sometimes considered with atomic mass, but the modern one is by atomic number.
• Atomic radius is a property that varies across the table but is not the basis of arrangement.

Answer:

C. magnesium

Question 5