The nucleus is the central part of an element that contains _____?

نیوکلئس کسی عنصر کا مرکزی حصہ ہے جس میں _____ ہوتا ہے؟

Electrons and protons

Neutrons and electrons

Protons and neutrons

None of these

The nucleus is the dense center of an atom, containing protons (positively charged) and neutrons (neutral).

Electrons orbit around the nucleus in electron shells.