EASY
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Among the following species, how many species are isoelectronic with Ne?

N3-,O2-, Cl, F, F-,O ,Na+,Mg+,Mg2+,O-

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Important Questions on Structure of Atom

EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

Which of the following are isoelectronic species?

I. C+H3

II. NH2-

III. NH4+

IV. NH3

MEDIUM
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is:
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
Be2+ is isoelectronic with which of the following ions?
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
From the following pairs of ions which one is not an iso-electronic pair?
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
Among the following species which option contains all isoelectronic species?
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
Which of the following electron is most tightly bound to the nucleus?
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
The isoelectronic set of ions is:
MEDIUM
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
Which of the following shell have a maximum 32 electrons?
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
The isoelectronic pair is:
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
Among the following, the set of isoelectronic ions is
MEDIUM
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
A subshell n=3, l=2 can accommodate maximum of
MEDIUM
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
Which of the following pairs of iron are isoelectronic and isostructural?
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
The maximum nuber of electrons that can be filled in the shell with the principal quantum number n=3 is
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
In the following sets of ions, which one is not isoelectronic with the rest of the species?
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
Which of the following sets of ions represent the collection of  isoelectronic species?
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
The pair, in which ions are isoelectronic with Al3+ is
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms

There are sub shells in shells around the nucleus.

Write the possible sub shells in third shell in the increasing order of energy.

EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
O2- is isoelectronic with
MEDIUM
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
Which of the following pairs of ions is isoelectronic and isostructural?
EASY
Chemistry>Physical Chemistry>Structure of Atom>Some Important Atomic Terms
Which is the correct order of increasing energy of the listed orbitals in the atom of titanium?

(At. No. Z = 22)