Answer :
The pairs are:
K, Kr - Same period
Be, Mg - Same group
Ni, Tc - Both are transition metals
B, Ge - Both are metaloids
Al, Pb - Both form inert oxides
K, Kr - Same period
Be, Mg - Same group
Ni, Tc - Both are transition metals
B, Ge - Both are metaloids
Al, Pb - Both form inert oxides
Elements are the defined as the substances that cannot be broken down into simpler forms. Elements are arranged in the periodic table based on the similar properties they exhibit.
Given elements are:
Potassium (K), Krypton (Kr), Beryllium (Be), Magnesium (Mg), Nickel (Ni), Technetium (Tc), Boron (B), Germanium (Ge), Aluminum (Al), Lead (Pb).
The pairs that have common characteristics are:
- K, Kr - Elements belong to same period 4.
- Be, Mg - Elements belong to dame group 2 A.
- Ni, Tc - Both elements are transition metals
- B, Ge - Both elements are metalloids
- Al, Pb - Both form inert oxides
Therefore, the elements are either placed in same group or period due to their similar characteristics.
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