I don't see any elements listed... but the elements that are most similar to calcium in behavior would be those directly above or below it; Mg (Magnesium) and Sr (Strontium).
Calcium shares properties with Magnesium and Strontium.
All the elements have a nucleus. The nucleus contains protons and neutrons. Electrons move around the nucleus.
Since they are in the same group (2A), yes they have similar properties, more than those of elements in other groups.
Calcium
They are both group 2 elements, separated by only one period.
Calcium shares properties with Magnesium and Strontium.
Calcium and potassium
I would expect all elements in group 1 to have similar chemical behavior to that of sodium, except for hydrogen. Hydrogen is not a metal, but has only 1 valence electron like the other elements in group 1.
All the elements have a nucleus. The nucleus contains protons and neutrons. Electrons move around the nucleus.
Calcium is in group 2/IIA, so the other elements in that group would be expected to behave most like calcium.
Since they are in the same group (2A), yes they have similar properties, more than those of elements in other groups.
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.
silicon
The electron configurations of the elements in each main group are regular and consistent:the elements in each group have the same number of valence electrons.
the elements that lie in the group in which magnesium lies will repeat the properties of magnesium.
Three elements that have similar chemical properties to oxygen are sulfur, selenium, and tellurium. These elements belong to the same group as oxygen in the periodic table and have similar electron configurations, which influence their reactivity and chemical behavior. Additionally, they can form similar types of chemical bonds with other elements.
Calcium