Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Structure of Atom question

2023 · 1 Feb · Shift 2 · Q10
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Structure of Atom
  5. /2023 · 1 Feb · Shift 2 · Q10

Structure of Atom question

2023 · 1 Feb · Shift 2 · Q10

JEE MainChemistryStructure of AtomMCQ+4 / −1
Which one of the following sets of ions represents a collection of isoelectronic species? (Given : Atomic Number : F:9,Cl:17,Na=11,Mg=12,Al=13,K=19,Ca=20,Sc=21\mathrm{F:9,Cl:17,Na=11,Mg=12,Al=13,K=19,Ca=20,Sc=21}F:9,Cl:17,Na=11,Mg=12,Al=13,K=19,Ca=20,Sc=21)
  1. A
    N3−,O2−,F−,S2−\mathrm{N}^{3-}, \mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{S}^{2-}N3−,O2−,F−,S2−
  2. B
    Ba2+,Sr2+,K+,Ca2+\mathrm{Ba}^{2+}, \mathrm{Sr}^{2+}, \mathrm{K}^{+}, \mathrm{Ca}^{2+}Ba2+,Sr2+,K+,Ca2+
  3. C
    Li+,Na+,Mg2+,Ca2+\mathrm{Li}^{+}, \mathrm{Na}^{+}, \mathrm{Mg}^{2+}, \mathrm{Ca}^{2+}Li+,Na+,Mg2+,Ca2+
  4. D
    K+,Cl−,Ca2+,Sc3+\mathrm{K}^{+}, \mathrm{Cl}^{-}, \mathrm{Ca}^{2+}, \mathrm{Sc}^{3+}K+,Cl−,Ca2+,Sc3+
PreviousNext

More from Structure of Atom

  • The wavelength of an electron of kinetic energy 4.50×10−29 J is ​×10−5 m. (Nearest integer) Given : mass of electron is 9×10−31 kg, h =6.6×10−34 J s2023 · Numerical
  • If the radius of the first orbit of hydrogen atom is α0​, then de Broglie's wavelength of electron in 3rd  orbit is :2023 · MCQ
  • The number of atomic orbitals from the following having 5 radial nodes is ​. 7s,7p,6s,8p,8d2023 · Numerical
  • Henry Moseley studied characteristic X-ray spectra of elements. The graph which represents his observation correctly is Given v= frequency of X-ray emitted Z = atomic number2023 · MCQ
  • The number of incorrect statement/s about the black body from the following is ​ (A) Emit or absorb energy in the form of electromagnetic radiation. (B) Frequency distribution of the emitted radiation depends on…2023 · Numerical
  • The electron in the nth  orbit of Li2+ is excited to (n+1) orbit using the radiation of energy 1.47×10−17 J(as shown in the diagram). The value of n is ​… Includes diagram2023 · Numerical
  • Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : In the photoelectric effect, the electrons are ejected from the metal surface as soon as the beam of light of frequency…2023 · MCQ
  • The number of correct statements from the following is ​. A. For 1s orbital, the probability density is maximum at the nucleus B. For 2s orbital, the probability density first increases to…2023 · Numerical