Classification of Elements and Periodicity in Properties questions
826 published questions with worked solutions.
- Which of the following has same observed and expected electronic configuration?
- The basic character of the transition metal monoxides follows the order _____ [CBSE PMT 2003, AIIMS 2007]
- An element in +3 oxidation state has the electronic configuration [ Ar ]3d^3. Its atomic number is _____
- Which of the following does NOT have valence electron in 3d subshell?
- Which one of the following d-block elements has half-filled penultimate d-subshell as well as half-filled valence s-subshell?
- Which of the following has completely filled d orbital?
- A transition element X has the configuration [ Ar ]3d^4 in its +3 oxidation state. Its atomic number is
- (n-1)d^ 10 ns^2 is the electronic configuration of
- Select the correct order of sizes for the following d-block elements.
- The atomic numbers of vanadium (V), chromium (Cr), manganese (Mn) and iron (Fe) are respectively 23,24,25 and 26. Which one of...
- Match the properties given in Column I with the metals given in Column II and choose the correct option from the codes given...
- Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is...
- Among the following series of transition metal ions, the one in which all metal ions have 3d^2, 3p^6 electronic configuration is...
- What is the general electronic configuration for second row transition series?
- The general electronic configuration of the transition elements is [MHTCET 2008]
- Identify the electronic configuration of transition element. [MHTCET 2003]
- Correct order of I ^ st IP among following elements Be, B, C, N, O is : -
- An atom has electronic configuration 1s^2 ,2s^2 ,2p^6 ,3s^2 ,3p^6 ,3d^3 ,4s^2, you will place it in which group :
- The ions O ^ 2- , F ^ - , Na ^ + , Mg ^ 2+ and Al ^ 3+ are isoelectronic. Their ionic radii show :
- The correct order of ionic radii of Y ^ 3+ , La ^ 3+ , Eu ^ 3+ and Lu ^ 3+ is - (Atomic nos. Y = 39, La = 57, Eu = 63, Lu = 71.)
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