The elements in each pair have in common it that they are metaloids
Yes bsjaibsvdnakiebdnsoehdbdnsieveb
I think it’s C atomic radius and numbers of unshielded protons
Answer:Balance. Acid+metal->salt+hydrogen.1 molecule od zinc contains 1 zinc atom.2 molecule of HCl contains 2 atoms hydrogen and 2 chlorine.1 molecule of Zncl2 contain one atom of zinc and two atom of chlorine.And two 2 atoms of hydrogen.
Explanation: