Period 1 Group 5
Rb is the symbol for the element, rubidium.
Rb is found in the 5th period. It is in the s block.
Sodium, potassium and rubidium are in the first group of the periodic table. Sodium is in the period 3. Potassium is in the period 4. Rubidium is in the period 5.
Rb
In terms of atomic radius, the sequence would be oxygen, carbon (both period 2), magnesium (period 3), rubidium (period 4), and cesium (period 5). Note that order by periods is not absolute: in each period, the elements toward the far left side have the largest radii. For example, the radius for lithium in period 2 is larger than almost all of the elements in periods 3 and 4. *Numerically, the elements O, C, Mg, Rb, and Cs have respective radii of about 60, 70, 150, 235, and 260 picometers.
Rb is the symbol for the element, rubidium.
Rb is found in the 5th period. It is in the s block.
group 1, period 5. symbol Rb
Sodium, potassium and rubidium are in the first group of the periodic table. Sodium is in the period 3. Potassium is in the period 4. Rubidium is in the period 5.
H Li Na K Rb Cs
RB ???
RB as it is at this time
Rb
85.4678 is the atomic weight of Rb.
RB means random boner
The oxidation number of Rb is 1.
It shows the horizonal row of the element so like Ex: Rb which is period 5 cause u count how many rows there is and when u find the element(He) it is in the 5th row