Potassium (K)
Potassium (K) has one valence electron and is located in period 4 of the periodic table.
The element in period 4 of the Periodic Table with the highest electronegativity is krypton (2.96). The period 4 element with the lowest electronegativity is potassium (0.82).
The element in period 4 group 2A is calcium (Ca).
Br (Bromine) is a period 4 element in the same group as F.
The element in group 4 period 5 is Zirconium (Zr).
Calcium (Ca) is the metallic element in period 4 with 20 electrons.
The element with atomic number 28 is Nickel (Ni). It is a transition metal in period 4 of the Periodic Table. It is the first element in the Nickel family. It has 28 electrons in 4 shells with 2 electrons in the outer shell.
The element is krypton (Kr)
element K, or potassium
calcium
Element 18 in period 4 is Krypton. It is a noble gas known for being colorless, odorless, and inert.
Germanium belongs to group IVA or group 14 and period 4