Question

Question #d6d20

Answer 1

Helium nucleus has 2 neutrons and 2 protons.

`m_p~~1.67*10^(-27)kg`
`m_n~~1.67*10^(-27)kg`

The values for `m_p` and `m_n` are only similar for the first two decimal places, from thereon, they vary,where aneutron is slightly heavier.

`m_e~~9.11*10^(-31)`

`"Number of electrons needed" = (2p+2n)/(ae) -= (4(1.67*10^(-27)))/(9.11*10^(-31))=7332.60154~~7333" electrons"`