AIEEE 2009 | Structure of Atom Question 155 | Chemistry

Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 x 10³ ms⁻¹ (Mass of proton = 1.67 $$\times$$ 10^-27 kg and h = 6.63 $$\times$$ 10^-34 Js) :

0.40 nm

2.5 nm

14.0 nm

0.32 nm

AIEEE 2009

MCQ (Single Correct Answer)

-1

In an atom, an electron is moving with a speed of 600 m/s with an accuracy of 0.005%. Certainity with which the position of the electron can be located is (h = 6.6 $$\times$$ 10^-34 kg m²s^-1, mass of electron, e_m = 9.1 $$\times$$ 10^-31 kg)

5.10 $$\times$$ 10^-3 m

1.92 $$\times$$ 10^-3 m

3.84 $$\times$$ 10^-3 m

1.52 $$\times$$ 10^-4 m

AIEEE 2008

MCQ (Single Correct Answer)

-1

Which one of the following constitutes a group of the isoelectronic species?

$$C_2^{2 - }$$, $$O_2^{-}$$, CO, NO

$$NO^{+}$$, $$C_2^{2 - }$$, CN^-, $$N_2$$

CN^-, $$N_2$$, $$O_2^{2-}$$, $$C_2^{2 - }$$

$$N_2$$, $$O_2^{-}$$, $$NO^{+}$$, CO