-Which answer is the electron configuration of which has an atomic number of 23

Question

-Which answer is the electron configuration of which has an atomic number of 23 A. 1s2 2s2 2p6 361 3p6 451 306 B. 1s2 2s2 2p6 382 3p6 482 367 C. 1s2 2s2 2p6 356 3p6 452 306 D. 1s2 2s2 2p6 3s2 3p6 4s2 3d3 E. 1s2 2s2 2p6 3s2 3p6 4s2 4p3 9- Isotopes have different amounts of Vanadiun a. A. Electrons rotons Neutrons Both A & B e. E. Both B & C 10- lons contain different amounts of a. A. Electrons b. B. Protons c. C. Neutrons d. D. Both A & B e. E. Both A &C; 11- Which element is four times the mass of carbon? a. A. Cr b. B. Ti c. C. Cd e. E. Mn

Explanation / Answer

8. Vanadium has atomic number 23 hence it contains 23 electrons .therefore electronic configuration is

Answer : D

9.istopes has same atomic number but differ in their mass number is different

Answer is : C

10.ions has different electrons in their valance shells

Answer is : A

11. Atomic mass of carbon is 12.so 4×12= 48

Atomic number 48 is cadmium

Answer : C

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.