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

The elements or group 3 to 12 are called:

Long form of periodic table is constructed on the bases of

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

Actinide series is started from the elements:

Lanthanide is belonged to period:

Elements with atomic No 90 to 103 are called:

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

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

In which year Mendeleev described his periodic law?

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

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

How many periods are present in the modern periodic table?

How many elements block present in modern periodic table?

How many elements present in 7^th period?

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

Group-17 elements are known as:

Which element has high value of electro negativity ?

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

The elements of a group show __________ properties:

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

Actinides are belonged to period:

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

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

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

Mark the incorrect statement about ionization energy:

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

Who are arranged the elements in groups of three

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

How many groups are present in the modern periodic table?

Which elements are present in 2^nd period

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

Atomic size of lithium is ___________

Atomic number of actinium is:

All transition elements are _________ .

Unit of electron affinity is ___________

Mendeleev’s periodic table was based upon the

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

How many elements present in 1^st period?

Period number tells about the:

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

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

Elements of a period show properties?

Group number tells about the:

In which year Moseley described his periodic law?

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

When we move from top to bottom ionization energy __________ .

The horizontal lines present in the periodic table are called ________

Electron affinity of fluorine in kjmil-1 is

Atomic size of Neon is ____________

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

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

Lanthanides series is started from the elements:

Element with Atomic no 58 to 71 are called:

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

Unit of atomic size is _________

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

All transition elements are belonged to:

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

Which element are present in group-1?

Along the period, which one of the following decreases:

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

Group-1 is also called:

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

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

The vertical columns present in the periodic table are called __________

The unit of ionization energy is:

Normal elements are belonged to:

How many elements present in 6^th period?

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

Point out the incorrect statement about electron affinity

Transition elements are:

The first ionization energy of sodium atom is ______

The atomic radii of the elements in periodic table

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

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

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

Atomic number of lanthanum is:

Which elements are present in 1st Group

Who were trying to convert inferior metals to superior metals?