Write the symbol of copper.

Important Questions on Atoms and Molecules

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

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

Symbol for the element Iron is?

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of iron is:

MEDIUM

Science>Chemistry>Atoms and Molecules>Atom

The modern atomic symbols were proposed by 

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of calcium is:

EASY

Science>Chemistry>Atoms and Molecules>Atom

What do you understand by the term symbol of an element?

EASY

Science>Chemistry>Atoms and Molecules>Atom

Who was the first scientist to use the symbols for elements in a very specific sense?

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of silicon is:

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of silver is:

EASY

Science>Chemistry>Atoms and Molecules>Atom

The names of the element are approved by:

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of chlorine is:

EASY

Science>Chemistry>Atoms and Molecules>Atom

Write the names and symbols of two elements, which are represented by the two letters of the English name.

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of gold is:

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol for the Gold is?

EASY

Science>Chemistry>Atoms and Molecules>Atom

Symbol of iodine is:

EASY

Science>Chemistry>Atoms and Molecules>Atom

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

EASY

Science>Chemistry>Atoms and Molecules>Atom

Write down the names of compounds represented by the formulae ${\mathrm{K}}_2\mathrm{S}{\mathrm{O}}_4$.