Not for anti-tank, but they have enough power to lift a hand grenade and throw it onto personnel or if very lucky into open hatch of a tank [1].

[1] - https://www.reddit.com/r/CombatFootage/search?q=drone%20gren...

The US military's current hand grenade - the M67 - weighs 400 grams, has a kill radius of 5 meters, and a casualty radius of 15 meters. The DJI Inspire 2, chosen at random, can carry 790 grams.

Yes. It doesn't take that much explosive to kill someone.

It can likely carry nearly 3-4 times that but you’ll burn out your engines, but on a short one way trip that is not a concern.

A claymore mine can be fitted to the bottom of most drones it’s much more effective and it’s electrically triggered.