Question

the number of electrons in 11.5g Na+ is

Answer 1

Answer:

given mass = 11.5 molar mass of Na =23 no. of moles of Na = 11.5/23 = 1/2 %

no. of atoms = no. of moles x avagadro no. = 1/2 x 6.022 × 10^23 = 3.022 × 10 ^23 atoms

Answer 2

Answer:

In 23 g of Na the number of atoms=6.022×10²³

In one gram of Na the number of electons =6.022×10²³/23

In 11.5 g of Na the number of atoms

=6.022×10²³×11.5/23

=6.022×10²²×5

=30.11×10²² mole

=3.011×10²³

The answer is 3.011×10²³ number of atoms or mole

Hope this helps you friend