Question

Define chemical twins . write general electronic configuration of actinoids

Answer 1

This is posted under identical twins, twins, and genetics and heredity?

It’s fraternal twins (2 different looking kids.. same birth)
or Identical twins (2 kids look the same because they have the genetics)

There is no such thing as chemical twins in terms of birth… unless someone is being funny about reproduction drugs that frequently cause multiple births aka twins, triplets, etc…. technically those are twins caused by chemicals but that’s not a real term.

Chemical twins after looking it up on the web is a term for CHEMISTRY… “Chemical twins are those in which the properties of some elements are same. Atomic size of Zr and Hf , Nb and Ta are similar. This is due to Lanthanide contraction.”

But my guess is someone was being funny about reproductive drugs causing multiple births and that is why you posted it here… so let’s go with that… (or maybe you misheard the word identical. they both end with ical)
The general electronic configuration of actinium is [Rn] 5f0-14 6d0-2 7s2 

Answer 2

Answer:

yrdtuctutcubgifxrryxyrx rxruxurrcutdyrcufcutxtcugcutdyftud tctc