Monohar Pandey Solutions for Exercise 2: Exercise 2

Which one of the following has the longest wavelength?

Some sub-nuclear particles are

1. antiproton

2. $\mu$-meson

3. $\pi$-meson

4. neutrino

5. positron

Increasing order of year of discovery is (starting from the earliest)

Which one of the following statements is not correct?

Which one among the following is the most appropriate statement with respect to the 'atomic weight of an element?

Consider the following statements

1. J.J Thomson proposed that electrons are embedded in a positive sphere.

2. Rutherford's model of the atom proposed that a very tiny nucleus is present inside the atom and electrons revolve around this nucleus.

3. Neils Bohr's model proposed that electrons are distributed in different shells with discrete energy around the nucleus. If the atomic shells are complete, then the atom will be stable and less reactive.

Which of the statements given above are correct?

Consider the following statements

1. The neutron was discovered in 1932 by bombarding beryllium with a.-rays.

2. The electron and proton have equal but opposite electron charges.

3. The neutron is not charged.

Which of the statements given above are correct?

Consider the following statements

1. Clusters of atoms that act as an ion are called polyatomic ions.

2. In ionic compounds, the charge on each ion is used to determined the chemical formula of the compound.

Which of the statement(s) given above is/are correct?

Which one of the following statements is correct?