Which was the first transuraniumactinoid element to be discovered?

The main factor for the cause of lanthanide contraction is poorer shielding of 5d electrons by 4f electrons.

Which isotope of plutonium is used in nuclear bombs?

Which of the following is not a very hard metal?

Sc3+ is a paramagnetic ion.

What is the end product formed when KMnO4 reacts with HCl?

Which of the following is not a property of a transition metal?

Which compound is used in Ultra-violet calibration?