Which of the following statement(s) is(are) correct?\

Question

Professor PC Thomas Classes · Answer

( $\mathrm{a}, \mathrm{b}, \mathrm{c}$ ) : (a) is the correct electronic configuration of\ $\mathrm{Cr}(Z=24), 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{1}$.\(b) is correct because magnetic quantum number ( $m_{l}$ ) can have values from $-l \ldots \ldots . . \ldots . .+l$ i.e. it can have negative values.\(c) is correct because the electronic configuration of Ag\ ( $Z=47$ ) is $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{2} 4 p^{6} 4 d^{10} 5 s^{1}$. From here we find 23 electrons have spin of one type and 24 electrons have spin of opposite type.\