MCQs 1 on CHAPTER-3 (CLASSIFICATION OF ELEMENTS AND PERIODICITY)

These are MCQs 1 on CHAPTER-3 (CLASSIFICATION OF ELEMENTS AND PERIODICITY) for 11th Class. Practice MCQs to check your knowledge for Entrance examination like CBSE NEET etc

1. Which of the following belong to the category of transition metal?

• K
• Ra
• Fe
• All

2. Alkali Metals belongs to

• s-block
• p-block
• d-block
• f-block

3. Elements with atomic number 35 belongs to

• 3^rd group
• 18^th group
• 17^th group
• 5^th group

4. The tenth element in the periodic table resembeles the element with atomic number

• 1 as well as 30
• 2 as well as 54
• 8 as well as 18
• 8 only

5. which of the following iso-electronic ion has lowest ionization energy?

• K ⁺
• Ca ²⁺
• Cl ^-
• S ^2-

6. The ionization energy of the element is a measure of

• the power of an atom to attract the shared pair in a molecule
• the energy required to remove the most loosely bound electron from the gaseous atom
• energy released when atom forms uninegative
• tendency of an ion to undergo hydration

7. which of the following statements concerning atomic size is correct?

• Atomic size decreases down a group
• Atomic size decreases along a period
• Radius of cation is more than that of the atom
• Radius of anion is less than that of the atom

8. In comparison to its parent atom, the size of the positive ion is

• greater
• equal
• double
• smaller

9. Which out of the following has the largest size?

• Rb ⁺
• Mg ²⁺
• Li ⁺
• Na ⁺

10. In trasition elements, the incoming electron occupies (n-1)d subshell in preference to

• np-level
• ns-level
• (n-1)p-level
• (n+1) s-level

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