In the periodic table, which element is in period 5 and group 4?

Question

In the periodic table, which element is in period 5 and group 4??  
A. Manganese  
B. Molybdenum  
C. Vanadium  
D. Zirconium

Accepted Answer

Correct Answer: (D)Zirconium. 
Rationale: The element in period 5 and group 4 is zirconium.The modern periodic table is organized by increasing atomic number into rows called periods and columns called groups. The period number indicates the highest principal energy level occupied by electrons in its ground state. The group number, particularly for main group and some transition elements, often indicates the number of valence electrons or relates to chemical properties.A) Manganese Manganese (Mn) has an atomic number of 25. Its electron configuration ends in 4s²3d⁵, meaning its highest principal energy level is n=4. Therefore, it is in Period 4. It is located in Group 7, as it has 7 valence electrons (4s² + 3d⁵ considered together for transition metals). Its position is Period 4, Group 7.B) Molybdenum Molybdenum (Mo) has an atomic number of 42. Its electron configuration includes 5s¹4d⁵, placing its highest *s* and *p* orbitals in the 5th shell. It is in Period 5. However, with 6 valence electrons (from 5s¹ and 4d⁵), it is located in Group 6. Its position is Period 5, Group 6.C) Vanadium Vanadium (V) has an atomic number of 23. Its electron configuration ends in 4s²3d³, placing it in Period 4. With 5 valence electrons (4s² + 3d³), it is in Group 5. Its position is Period 4, Group 5.D) Zirconium Zirconium (Zr) has an atomic number of 40. Its electron configuration is [Kr] 5s²4d². The highest principal quantum number is 5, placing it in Period 5. As a group 4 element, it has 4 valence electrons (the 5s² and 4d² electrons are considered its valence electrons). It resides directly below titanium (Ti) in Group 4. Its position is Period 5, Group 4.Conclusion: By navigating the periodic table, finding the fifth row (Period 5) and then the fourth column (Group 4), the element at that intersection is zirconium (Zr). The other options are located in different periods or groups.

In the periodic table, which element is in period 5 and group 4?

A
Manganese

B
Molybdenum

C
Vanadium

D
Zirconium

The element in period 5 and group 4 is zirconium.

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Related Questions

In the periodic table, which element is in period 5 and group 4?

A Manganese B Molybdenum C Vanadium D Zirconium

The element in period 5 and group 4 is zirconium.

Topic Flashcards

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Related Questions

A
Manganese

B
Molybdenum

C
Vanadium

D
Zirconium