Question

Calculate total positive charge and total negative charge on 5 grams of nickel. Given: atomic mass and atomic number of nickel are 58:69 amu and 28 amu, respectively.

Answer 1

Since, 58.69 g of nickel contains 6.022 x 10²³ (i.e. 1 mol) atoms of nickel .

So, 5g of nickel must contain

   atoms of nickel.

As atomic number of nickel is 28.

So, 1 atom of nickel has 28 protons and also 28 electrons.

Therefore, Total number of positive charge (i.e. protons) on 5g of nickel = total number of negative charge(i.e. electrons) on 5g of nickel

= 28 x 0.513 x 10²³ = 14.364 x 10²³

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