Please help me I will give you the brain thing and extra points. image below Which of the following trends can be observed when moving down a column in the Periodic Table?

Question 1 options:

The atomic mass decreases.

The number of valence electrons remains the same.

The number of orbitals decreases.

The possible number of bonds formed decreases.

c. movement because i took the test and it lets me review my answers

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

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