not reactive
All the synthetic elements on the Periodic Table appear after Uranium (atomic no. 92). These are the only synthetic elements.
Yes, all synthetic elements are man made.
Electronegativity is a measure of the reactivity; see the link below.
inertness, non-reactivity
Depends on the elements with which they are reacting with.
The capacity of elements to displace hydrogen can be determined based on their position in the reactivity series. Elements higher in the reactivity series can displace hydrogen from compounds of elements lower in the series. For example, metals like magnesium and zinc can displace hydrogen from water because they are higher in the reactivity series.
Ununbium, also known as element 112, is a synthetic element with very limited information about its reactivity. However, being a member of group 12 in the periodic table, it is predicted to have similar reactivity to other elements in the same group, such as mercury and copernicium.
The reactivity is increasing goinng down in the group.
Group 7 of the periodic table, also known as the halogens, contains five elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). These elements are known for their reactivity and form a variety of compounds with other elements. Additionally, there is a synthetic element called tennessine (Ts), which is also considered part of this group.
Synthetic or man-made elements. Obviously synthetic sounds significantly cooler.
Elements that cannot be found on Earth naturally but can be created artificially are called synthetic elements. These elements are typically produced in laboratories through nuclear reactions or particle accelerators. Examples of synthetic elements include technetium and americium.
Carbon