What is a period in the periodic table?
Q: What is a period in the periodic table?
A: A period in the periodic table is any horizontal row of elements.
Q: How many protons does each element have compared to the one to its left?
A: Each element in the same period has one more proton than the one to its left, meaning its atomic number is one number higher.
Q: What type of elements are on either side of a period?
A: The elements on the left side of a period are very metallic, while those on the right are nonmetallic.
Q: Why do atoms get larger as you move from left to right across a period?
A: As you move from left to right across a period, atoms get larger because they have more protons and electrons.
Q: How many elements are there in periods 1-5?
A: Period 1 has 2 elements (hydrogen and helium), Period 2 and 3 each have 8 elements, Period 4 and 5 each have 18 elements.
Q: How many elements are there in periods 6 and 7?
A: Period 6 and 7 each have 32 elements, including F-block elements.
