What is the atomic weight of copper ?

Important Questions on Atoms and Molecules

MEDIUM

Science>Chemistry>Atoms and Molecules>Atom

The graph of $\ln \left(\frac{R}{R_0}\right)$ versus $\ln A$ ($R=$radius of a nucleus and $A=$mass number) is

HARD

Science>Chemistry>Atoms and Molecules>Atom

In a Davisson-Germer experiment, Helium atoms were used in place of electrons. What should be the energy of Helium so that a strong peak of scattered He appears at an angle of $50°,$ as was the case with electrons having an energy of $54 \mathrm{eV}?$ (Take mass of $\mathrm{He}$ atoms to be $7500$ times the mass of electrons)

MEDIUM

Science>Chemistry>Atoms and Molecules>Atom

The atomic number of element having symbol $\mathrm{Unt}$ is

EASY

Science>Chemistry>Atoms and Molecules>Atom

The mass number and the volume of a nucleus is $M$ and $V$ respectively. If the mass number is increased to $2 M$ then the volume is changed to

EASY

Science>Chemistry>Atoms and Molecules>Atom

The radius of hydrogen atom is: 

EASY

Science>Chemistry>Atoms and Molecules>Atom

The symbol of copper is

EASY

Science>Chemistry>Atoms and Molecules>Atom

The mass of hydrogen atom is determined:

EASY

Science>Chemistry>Atoms and Molecules>Atom

The smallest unit of matter which can exist independently is called:

MEDIUM

Science>Chemistry>Atoms and Molecules>Atom

The mass of the helium atom is twice that of the hydrogen atom.

EASY

Science>Chemistry>Atoms and Molecules>Atom

$\mathrm{Ca}$ is the symbol of:

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of chlorine is:

EASY

Science>Chemistry>Atoms and Molecules>Atom

The atomic masses of elements are always whole numbers.

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of silver is:

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of carbon is:

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of iodine is:

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of iron is:

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of aluminium is:

MEDIUM

Science>Chemistry>Atoms and Molecules>Atom

The modern atomic symbols were proposed by 

EASY

Science>Chemistry>Atoms and Molecules>Atom

$1 \mathrm{nm}$ is equal to:

HARD

Science>Chemistry>Atoms and Molecules>Atom

The correct statement about atoms is: