Answer:
Mass= volume x density
Explanation:
Multiply the density by the volume.
As atomic number increases atomic radii also increase down group 1. ionisation energy down group 1 will also decrease because as atomic radii gets bigger there is less electrostatic force between nuclei and electrons so less energy needed to remove valence electron.
Because someone was wearing it and their dna could be in it i’m guessing
1bonding and 3non-bonding
(Refer to the attachment for structure