Which has a greater number of atoms a gram of helium or a gram of neon?

              1 g of He contains greater number of atoms.

Proof:

Number of Atoms in 1 g of He:

Step 1: Calculate Moles of 1 g He as,

                         Moles  =  Mass ÷ M.Mass

                         Moles  =  1 g ÷ 4 g.mol⁻¹

                        Moles  =  0.25 mol

Step 2: Calculate Number of Atoms of He as,

                         # of Atoms  =  Moles × 6.022 × 10²³

Putting value of moles,

                         # of Atoms  =  0.25 × 6.022 × 10²³

                         # of Atoms  =  1.50 × 10²³ Atoms of He

Number of Atoms in 1 g of Ne:

Step 1: Calculate Moles of 1 g He as,

                         Moles  =  Mass ÷ M.Mass

                         Moles  =  1 g ÷ 20.18 g.mol⁻¹

                        Moles  =  0.0495 mol

Step 2: Calculate Number of Atoms of Ne as,

                         # of Atoms  =  Moles × 6.022 × 10²³

Putting value of moles,

                         # of Atoms  =  0.0495 × 6.022 × 10²³

                         # of Atoms  =  2.98 × 10²² Atoms of Ne

where are the choice options?

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.