Chemistry Past Questions and Answers

An element X has electron configuration 1s² 2s² 2p⁶ 3s² 3p⁵. Which of the following statements is correct about the element?

Beryllium and aluminium have similar properties because they

If the difference in electronegativity of elements P and Q is 3.0. The bond that will be formed between them is

How many protons, neutrons and electrons respectively are present in the element 60/27 Co?

The radio active radiation used in studying the arrangement of particles in giant organic molecules is