ATOMIC STRUCTURE 1. Which isotope is used in nuclear reactors? U-234 U-238 U-235 All of these 2. Which isotope is commonly used to irradiate cancer cells? lodine-123 Carbon-14 Cobalt-60 lodine-131 3. Number of neutrons in M are: 13 14 27 15 4. 11Na has electronic configuration: 1s², 2s², 3s¹ 1s², 2s², 2p, 3s³ 1s²,2s², 2p, 1s², 2s, 2p6, 3s¹ 5. Which of the following statement is not correct about isotopes? they have same atomic number they have same number of protons they have same chemical properties they have same physical properties 6. A sub-shell that can accommodate 6 electrons is s d p f 7. Chlorine has two isotopes, both of which have: same mass number same number of neutrons same number of neutrons same number of electrons 8. M shell has sub-shells: 1s, 2s 2s, 2p 3s, 3p, 3d 1s, 2s, 3s Loading … Question 1 of 8 Related Questions: Nature of Science in Chemistry MCQ PERIODIC TABLE AND PERIODICITY OF PROPERTIES Matter MCQ CHEMICAL BONDING STOICHIOMETERY ELECTOROCHEMISTRY ENERGETICS
