Classification of Elements and Periodicity in Properties questions
826 published questions with worked solutions.
- What is the total number of unpaired electrons in an element placed at period-4 and group-12 either in excited or at ground state?
- Identify the element having outer electronic configuration ns^2np^5
- Identify the element having smallest ionic size in +3 state from following.
- Identify the element with lowest electronegativity?
- What is the number of electrons present in 3d orbital of Ti in +2 state?
- Which of the following elements belongs to first group and fifth period of periodic table?
- Identify the element having lowest first ionization enthalpy?
- Which pair of elements from following has half filled d-orbital in observed electronic configuration?
- What is the value of electronegativity of oxygen?
- Identify the correct decreasing order of atomic size from following
- Which from following pair of elements have one electron in 5d - subshell in observed electronic configuration?
- Which among the following elements has only one electron in valence shell?
- What is the position of copper in modern periodic table?
- Identify the element having smallest atomic radius from following
- Which among the following elements develops noble gas configuration in +1 state?
- Identify the element having highest ionization enthalpy
- Identify the element is it's observed and expected electronic configuration remains same as [Ar] 3d^1 4s^2
- Identify the element from following having six unpaired electrons in observed electronic configuration?
- Identify the element having general electronic configuration ns^ 2 np^ 4 from following.
- Which from following elements has highest value of ionization enthalpy ( _i H_1)
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