Who were trying to convert inferior metals to superior metals?

How many elements present in 1^st period?

In modern periodic table the elements in a group do not have continuously increasing

Atomic size of Neon is ____________

Mendeleev’s periodic table was based upon the

4^th and 5^th period of the long form of periodic table are called

Period number tells about the:

Which element has high value of electro negativity ?

Point out the incorrect statement about electron affinity

Which one of the following halogens has lowest electron-egativity?

Atomic size of lithium is ___________

The minimum amount o energy which is required to remove an electron from the gaseous state of an atom is called

Mendeleev arranged elements in his periodic table on the basis of:

How many periods are present in the modern periodic table?

Group-1 is also called:

In Periodic Table, 2^nd & 3^rd period are called _______

How many groups are present in the modern periodic table?

Electron affinity of fluorine in kjmil-1 is

The atomic radii of the elements in periodic table

The elements of a group show __________ properties:

How many elements present in 7^th period?

When we move from top to bottom in a group atomic size is __________.

How many elements present in 2^nd & 3^rd Period?

Which period of the modern periodic table is considered as incomplete period

How many elements present in 4^th & 5^th Period?

Moseley arranged the elements in his periodic table on the basis of:

How many elements block present in modern periodic table?

Unit of atomic size is _________

When we move from top to bottom in a group shielding effect is ____________.

When we move from left to right in a period shielding effect is ___________

The amount of energy released when an electron is added in the outermost shell of an isolated gaseous atom is called

Along the period, which one of the following decreases:

The ability of an atom to attract the shared pair of electrons toward, itself in a molecule is called:

Group number tells about the:

Elements with atomic No 90 to 103 are called:

In which year Mendeleev described his periodic law?

Transition elements are:

Long form of periodic table is constructed on the bases of

How many elements were present in Mendeleev’s periodic table?

In which year Moseley described his periodic law?

With increase atomic number, the number of electrons in an atom also ______

Which elements are present in 2^nd period

How many elements present in 6^th period?

The first ionization energy of sodium atom is ______

All transition elements are _________ .

The horizontal lines present in the periodic table are called ________

Lanthanides series is started from the elements:

Who are arranged the elements in groups of three

Element with Atomic no 58 to 71 are called:

Elements of a period show properties?

The amount of energy given out when an electron is added to an atom is called ____________

In which year Newland put forward his observation I the form of law of octaves?

1. Who determined the correct atomic masses of elements in 1860?

The unit of ionization energy is:

Atomic number of lanthanum is:

Elements are classified into four blocks depending upon the type of the

Actinide series is started from the elements:

The vertical columns present in the periodic table are called __________

How many electrons present in the valence shell of group-1 elements?

In which century chemists devoted to arrange the elements in a systematic manner:

When we move from left to right in a period ionization energy is ___________.

Elements of group 13 to 18 have their valence electrons in sub shell.

Elements of group 1 & 2 have their valence electrons in sub shell.

Actinides are belonged to period:

Unit of electron affinity is ___________

Groups-17 elements contains electrons in their outer most shell:

Normal elements are belonged to:

Which elements are present in 1st Group

The elements or group 3 to 12 are called:

When we move left to right in a period atomic number _________

Lanthanide is belonged to period:

When we move from left to right in a period atomic size is _____________

When we move from top to bottom ionization energy __________ .

All transition elements are belonged to:

Mark the incorrect statement about ionization energy:

Group-17 elements are known as:

The group-1 and group-2 and group-13 to group-17 contain the elements:

Which element are present in group-1?

The distance between the Nuclei of two carbon atoms in its elements form is ___________

Atomic number of actinium is: