noun🔗Shareप्रोटॉनA positively charged subatomic particle forming part of the nucleus of an atom and determining the atomic number of an element, composed of two up quarks and a down quark."The number of protons in an atom's nucleus defines what element it is. "एक परमाणु के नाभिक में प्रोटॉन की संख्या यह निर्धारित करती है कि वह कौन सा तत्व है।physicschemistryelementscienceenergysubstancestructuretechnicalcompoundChat with AIVocabulary GamePractice Reading