Question

hey can someone help me please​

Answer 1

Explanation:

1. A period in a periodic table is a row of chemical elements.
2. A. magnesium (Mg). B.potassium(k). C.iron(Fe). D.copper(Cu)
3. A.C(carbon). B.Cl(chlorine). C.Au(gold). D.Sr(strontium)
4. He(helium 1).Ge(germanium 4). Rb(rubidium 5).I(iodine 5)
5. Sulfur(VIA or6A). Ca(calcium 2A). iodine (VIIA or 7A). Fe(iron VIIIB or 8B)
6. Halogen (chlorine, iodine) . Chalogen(sulfur). AIkali metal(. potassium and. sodium ). Boron(boron). Lanthanide series(Lanthanum). Alkaline earth metal(magnesium and calcium). Transition metal (iron gold). Nobel gas(Helium Argon)