Actinides are the elements with atomic number from:

Related Mcqs:

1. Actinides are the elements with atomic numbers from __________?

   A. 97 to 104
   B. 101 to 115
   C. 89 to 103
   D. 36 to 43

   Submitted by: Fahad Mehsud

2. The atomic radii decreases by increasing atomic number in________________?

   A. Alkali metal
   B. Alkaline earth metal
   C. Elements from Li to Ne
   D. Halogens

3. The number of isotopes of elements with even mass number and even atomic number are ________________?

   A. 280
   B. 300
   C. 154
   D. 54

4. Mostly elements have fractional atomic masses because of______________________?

   A. Mass of an atom itself is in fraction
   B. Atomic masses are average masses of isobars
   C. Atmoic masses are average masses of isotopes proportional to their relative abundance
   D. Atmoic masses are average masses of isotopes

5. Which of the p-block elements are not representative elements ?

   A. Alkali metals (I-A)
   B. Group-14 elements (IV-A)
   C. Group-18 elements (VIII-A)
   D. Halogens (VII-A)

6. Atom with higher atomic number produces X-rays of__________________?

   A. Shorter wavelength
   B. Larger wavelength
   C. X-ray not produced
   D. All are possible

7. The atomic number of an element having maximum number of unpaired electrons in p-subshell is_______________?

   A. 7
   B. 10
   C. 12
   D. 16

8. In a period the atomic radius ?

   A. Increases
   B. Decreases
   C. Remain same
   D. First decreases then increases

9. Which of the following have their outer most shell complete in atomic form ?

   A. Noble gases
   B. Alkali metals
   C. Coinage metals
   D. Gun metals

10. The atoms of same element having same atomic number but different mass number are called____________________?

    A. Isobars
    B. Isomers
    C. Isotopes
    D. Isotropes