निम्नलिखित में से किसने परमाणु संरचना का एक मॉडल प्रस्तावित किया जो क्रिसमस पुडिंग के समान था और उन्हें इलेक्ट्रॉन की खोज का श्रेय भी दिया जाता है?

Which postulate of Dalton's Atomic Theory was proven incorrect by the discovery of subatomic particles?

What is the correct chemical symbol for a species containing 20 protons, 18 electrons, and 22 neutrons?

Which of the following sets of quantum numbers are permissible? (J) n = 3, ℓ = 3, m = 2, s = +12 (K) n = 2, ℓ = 2, m = 1, s = -12 (L) n = 1, ℓ = 0, m = 0, s = -12 (M) n = 3, ℓ = 2, m = 1, s = -12 Choose the correct option: