Cobalt
Silicon is p-block element. It has 4 valence electrons. It is present in group-14.Titanium has 4 valence electrons. It is in the third period. Titanium is a metal element.
Overview of Cobalt Atomic Number:27 Group: 9 Period: 4 Series: Transition Metals
Selenium or Se
Calcium has 20 electrons and has an atomic weight of 40.078 amu. It is in group 2, period 4 of the Periodic Table, and is a soft gray alkaline earth metal.
On the periodic table it shows that it is Ca which stands for Calcium
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 representative element in Period 4 with three valence electrons is aluminum. Aluminum is a metal that is commonly used in various industries due to its light weight and corrosion resistance.
calcium (Ca)
Calcium (Ca) is the metallic element in period 4 with 20 electrons.
Germamium is in period 4 and group 4. It is in period 4 because it has 4 shells that hold electrons. It is in group 4 because it has 4 electrons in its outer shell.
The representative element in period 4 with 3 valence electrons is phosphorus.
Berylium is a metal element. There are 4 electrons in a single atom.