They both have 2 valence electrons and have similar reactivity.
Calcium and radium are in the same group of the periodic table of Mendeleev (group 2, alkaline earth metals); consequently calcium and radium has similar chemical properties and can be interchangeable in some situations.
Zirconium and titanium are in the group 4 (titanium group) of the periodic table of Mendeleev.
Beryllium, Calcium or any other element within the same family or group (vertical column on the periodic table)
Yes. They are because they are both are in the same group and are metals.
Both are situated in the group 2 of the periodic table.
Mendeleev placed iodine in the same group as fluorine because both elements have similar chemical properties, such as forming compounds with similar stoichiometry and showing similar reactivity patterns. This classification allowed Mendeleev to identify a pattern in the properties of elements and lay the foundation for the modern periodic table.
Calcium and radium are in the same group of the periodic table of Mendeleev (group 2, alkaline earth metals); consequently calcium and radium has similar chemical properties and can be interchangeable in some situations.
Zirconium and titanium are in the group 4 (titanium group) of the periodic table of Mendeleev.
No. Barium and magnesium and calcium are in group 2A but potassium is in group 1A.
Mendeleev put bromine and chlorine in the same group on the periodic table because they have similar chemical properties. Both elements belong to group 17 (Group VIIA) due to their similar valence electron configuration and tendency to form halide compounds.
alkaline metal group(or the group 1 elements, except for hydrogen(H), which is a group 1 element but not an alkali metal) - lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr).
The elements Ba (Barium) and Ca (Calcium) belong to the same group on the periodic table, as they both belong to Group 2 (alkaline earth metals). They do not belong to the same period, as Barium is in period 6 and Calcium is in period 4.
Beryllium, Calcium or any other element within the same family or group (vertical column on the periodic table)
Yes. They are because they are both are in the same group and are metals.
Both calcium and potassium are alkaline earth metals, but potassium is in the same group (Group 1) as sodium and lithium while calcium is in Group 2. Their reactivity and properties are different, with potassium being more reactive and having a lower melting point compared to calcium.
Beryllium (Be). This is because on the periodic table Be is located in the same group (column) as Calcium and is the highest element in that column. Elements of the same group have similar properties and their masses decrease the higher they are in the group.
In the Mendeleev periodic table, elements in each column had similar chemical properties because they shared the same valence electron configuration. This allowed for elements within the same group to exhibit similar reactivity and form similar compounds.