अर्थ : A soft silvery metallic element of the alkali metal group. Burns in air and reacts violently in water. Occurs in carnallite and lepidolite and pollucite.
पर्यायवाची : atomic number 37, rubidium
Rb ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Rb ka matlab kya hota hai?