Likewise, how many blocks does it take to kill a skeleton?
Dig a 1×1 hole down at least 23 blocks. Withfalldamage mobs don't take damage for the first 3 blocksandtake 1 damage for every block over 3. So to do 20 damage(10hearts) the needed distance is 23.
Hereof, how far does a zombie have to fall to die in Minecraft?
There's something aboutzombiesin Minecraft that if you merely dropthem down 23blocks for the fall damage, they take twopunches to kill,rather than one punch like other mobs. (23 ½is the same,and 24 blocks will simply killthem.)
Monster spawners now drop when mined using atoolenchanted with the new Silk Touch enchantment. PickBlock nolonger works on monster spawners.