Question

What are horizontal similarities in properties of transition elements

Answer 1

For example, the metals in group 11 have similar characteristics of electrical conductivity, luster, crystal structure, ductility, and tensile strength. Moving horizontally across the periodic table trends in properties such as atomic radius, electronegativity, and electron affinity are observed

Answer 2

The simmilarities is that all the transition elements have same number of shells that means their valencies are not same.
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