Which metal is used to make coin amd for packaging​

cupro - nickel

if u on its weight its 9.00gms and diameter:23mm

Silver

Explanation:

Because when white metal has an illustrious reputation for its use on jewelry and coins, but today, silvers primary use is industrial.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

its first and third is your answer i did the qustion the fourth isnt right