ATOMIC STRUCTURE 1. Which isotope is commonly used to irradiate cancer cells? lodine-123 Carbon-14 Cobalt-60 lodine-131 2. 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 3. Which isotope is used in nuclear reactors? U-234 U-238 U-235 All of these 4. Chlorine has two isotopes, both of which have: same mass number same number of neutrons same number of neutrons same number of electrons 5. 11Na has electronic configuration: 1s², 2s², 3s¹ 1s², 2s², 2p, 3s³ 1s²,2s², 2p, 1s², 2s, 2p6, 3s¹ 6. M shell has sub-shells: 1s, 2s 2s, 2p 3s, 3p, 3d 1s, 2s, 3s 7. Number of neutrons in M are: 13 14 27 15 8. A sub-shell that can accommodate 6 electrons is s d p f 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
