Carbon-14 has a half-life of 5730 years. in a plant fossil, you find that the 14c has decayed to 1/8.00 of the original amount. how long ago was this plant alive?

If it is an isoelectronic series select true, if not select false. o2-, s2-, se2-, te2- na+, k+, rb+, cs+ n3-, p3-, as3-, sb3- ag, cd+, sn3+, sb4+ f-, cl-, br-, i- f-, ne, na+, mg2+ s2-, s, s6+