6: K-TYPE answer format: Mark a if A.B.C are correct: b if A. C: c if B. D: d if

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6: K-TYPE answer format: Mark a if A.B.C are correct: b if A. C: c if B. D: d if D only: e otherwise. A: A CI atom would be diamagnetic. B: CI and F are isoelectronic. C: The elements with atomic numbers 32 and 33 would have similar chemical properties. D: Atoms with unpaired electrons are attracted into a magnetic field. 7: K-TYPE answer format: Marka if A.B,C are correct: b if ?.? ? ??. D: d if D only; e otherwise. A: The electronegativity of Se is greater than that of O B: The electronegativity of Br is less than that of As. C: Electronegativity is the energy absorbed when an atom loses an electron. D: The formal charge of C in CO2 is 0. 8: K-TYPE answer format: Mark a if A.B.C are correct: b ifA, C: e if B, D; d ifD only: e otherwise. After an atom is heated to a very high temperature, it emits a continuous spectrum as the electrons return to th lowest energy level The energy of electromagnetic radiation is direcctly proportional to its frequency. The frequency of microwaves is more than that of visible radiation. If two electrons are placed in the same orbital, they must have opposite spins. A: B: C: D: 9: K-TYPE answer format: Mark a if A.B,C are correct; b ifA, C; fB. D: d ifD only; otherwise. A: The first ionization energy of Ne is less than the first ionization energy of Ar B: The first ionization energy of Kr is less than the 2nd ionization energy of Kr C: Ionization energy is the energy released when an atom loses an electron. D: Less energy is required to remove the first electron from a Ge atom than to remove the first electron from a Br atom. 10: K-TYPE answer format: Marka if A,B.C are correct, b if A,C; ?? . D; d if D only: otherwise. ? e A: The formal charge of C in HCO2 is 0. B: The electronegativity of I is greater than that of C. C: The electronegativity of Se is less than that of Br. D: Electronegativity is defined as the tendency of an atom to attract electrons when alone in space.

Explanation / Answer

[6]

(A)For Cl atoms, the electron configuration is 3s23p5Since there is an unpaired electron, Cl atoms are para magnetic...False

(B) An Isoelectronic Series is a group of atoms/ions that have the same number of electrons. For Cl- number of electrons is 18 and for F- number of electrons is 10 so they are not isoelectronic ...False

(C)Elements in the same group have similar chemical properties, here element with atomic number 32(Germanium) is in group-14 where as element with atomic number 33(Arsenic) is in group-15 so they do not have same chemical properties...False

(D) The unpaired electrons are attracted by a magnetic field due to the electrons' magnetic dipole moments....True

Thus option‘d’ is the correct choice,

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