An element has electronic configuration 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(4). Predict their period , group and block :

An element has electronic configuration 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p

1.	An element has electronic configuration 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(4). Predict their period , group and block :
Answer» <P>Period = `3^(rd)`, block = p, group = 16 Period = `5^(th)`, block = s, group = 1 Period = `3^(rd)` , block = p, group = 10 Period = `4^(th)` , block = d, group = 12 Solution : Period = `3^(rd)`, block = p. group = 16 By observing PRINCIPAL quantam NUMBER (n), Orbital (s,p, d,F)and equating no. of `e^(-)`, s we are able to find the period, block and group of element in periodic table.