On heating, the following trioxocarbonate (IV) salts decompose to give solid residue except

The number of orbitals in a p-sub level of an atom is

The d-block elements are paramagnetic because they

Two elements, X and Y are in the same group on the periodic table because they both have the same

Which of the following elements is a metalloid?

Which of the following ions has an electron configuration different from the other?

Which of the following electron configurations represents that of an atom in its ground state?

Which of the following statements about a radioactive substance is/are correct? l. lt emits radiation continuously and spontaneously. ll. The emitted radiati...

The atomic radii of metals are usually