IIT-JEE 1998 | Structure of Atom Question 40 | Chemistry

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IIT-JEE 1998

MCQ (More than One Correct Answer)

-0.5

Decrease in atomic number is observed during

alpha emission

beta amission

positron emisson

electron capture

IIT-JEE 1998

MCQ (More than One Correct Answer)

-0.5

Which of the following statement(s) is (are) correct?

The electronic configuration of Cr is [Ar] 3d⁵4s¹.(Atomic number of Cr = 24)

The magnetic quantum number may have negative value

In silver atom, 23 electrons have a spin of one type and 24 of the opposite type. (Atomic number of Ag = 47)

The oxidation state of Nitrogen in HN₃ is -3

IIT-JEE 1998

MCQ (More than One Correct Answer)

-0.5

The energy of an electron in the first Bohr orbit of H atom is -13.6 eV. The possible energy value(s) of the excited state(s) for electrons in Bohr orbits of hydrogen is (are)

-3.4 eV

-4.2 eV

-6.8 eV

-1.5 eV

IIT-JEE 1984

MCQ (More than One Correct Answer)

-0.25

An isotone of $${}_{32}^{76}Ge$$ is

$${}_{32}^{77}Ge$$

$${}_{33}^{77}Ge$$

$${}_{34}^{77}Ge$$

$${}_{34}^{78}Ge$$

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