Classification of Elements and Periodicity in Properties questions
826 published questions with worked solutions.
- The electronic configuration of a silver atom in the ground state is:
- Moseley's name is connected with the discovery of:
- Number of electrons in the outermost orbit of the element of atomic number 15 is:
- The valency orbital configuration of an element with Z=23 is:
- Electronic configuration of H^- is:
- Which particle may be removed from a stable neutral atom with the least energy change?
- Which have the same number of s-electrons as the d-electrons in Fe^ 2+ ?
- Total number of unpaired electrons in an unexcited atom of atomic number 29 is:
- Which one of the following pairs of atoms/atom-ion have identical ground state configuration?
- An improbable (unrealized) configuration for chromium (Z=24) is:
- Which set has the same number of s-electrons?
- A transition element X has configuration [Ar]3d^5 in its +3 oxidation state. Its atomic number is:
- The number of d-electrons in Fe^ 2+ (At. No. of Fe =26) is not equal to that of:
- Which of the following ions has electronic configuration [Ar]3d^6?
- Electronic configuration of tritium is:
- The electronic configuration of the element which is just above the element with atomic number 43 in the same group (period) is:
- The amount of energy required to remove the electron from a Li^ 2+ ion in its ground state is how many times greater than the...
- The number of d-electrons in Fe^ 2+ (Z=26) is not equal to the number of electrons in which one of the following? [NEET 2015]
- The electronic configuration of Cu (atomic number 29) is [AIPMT 1991]
- Number of unpaired electrons in N^ 2+ is/are [AIPMT 1989]
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