Concentrated hcl is 98% and has density of 1.46g/cm3 what volume of concentrated acid required to make 2l of 0.25M of hcl.?

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

can you list the answers so i can answer