Okay kiddo, let's talk about something called a "transition metal nitrido complex".
Firstly, let's break down these big words. "Transition metal" is a fancy way of saying a type of metal that is really good at making chemical reactions happen. You might have heard of some of them, like iron or copper.
Now, "nitrido" might sound a bit tougher, but it's just a way of describing a molecule that has a nitrogen atom in it. Nitrogen is a gas that's all around us in the air we breathe.
Lastly, "complex" just means a group of atoms that are stuck together in a certain way. This group might be made up of different elements, like the transition metal and the nitrogen.
So, put all those words together and we get a transition metal nitrido complex - a group of atoms that includes a special type of metal and nitrogen.
These complexes are very interesting to scientists because they can do cool things like catalyze (help speed up) chemical reactions or store energy for later use. They can also be used in things like solar cells or making new medicines.
Overall, transition metal nitrido complexes are just a way of describing some really special groups of atoms that can help us do some pretty cool things!