All transition elements are belonged to:

Period number tells about the:

When we move from top to bottom ionization energy __________ .

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

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

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

Electron affinity of fluorine in kjmil-1 is

Actinide series is started from the elements:

Unit of atomic size is _________

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

Element with Atomic no 58 to 71 are called:

Transition elements are:

Lanthanide is belonged to period:

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

How many periods are present in the modern periodic table?

Atomic number of actinium is:

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

Group number tells about the:

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

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

Group-1 is also called:

Atomic number of lanthanum is:

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

How many elements present in 6^th period?

Point out the incorrect statement about electron affinity

The horizontal lines present in the periodic table are called ________

Normal elements are belonged to:

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

In which year Mendeleev described his periodic law?

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

Which elements are present in 2^nd period

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

The unit of ionization energy is:

Unit of electron affinity is ___________

The elements or group 3 to 12 are called:

The vertical columns present in the periodic table are called __________

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

How many elements present in 1^st period?

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

All transition elements are _________ .

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

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

Long form of periodic table is constructed on the bases of

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

How many elements present in 7^th period?

Atomic size of lithium is ___________

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

The atomic radii of the elements in periodic table

Elements with atomic No 90 to 103 are called:

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

Actinides are belonged to period:

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

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

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

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

Along the period, which one of the following decreases:

Elements of a period show properties?

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

The elements of a group show __________ properties:

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

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

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

In which year Moseley described his periodic law?

The first ionization energy of sodium atom is ______

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

Mark the incorrect statement about ionization energy:

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

Lanthanides series is started from the elements:

Who were trying to convert inferior metals to superior metals?

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

Which element has high value of electro negativity ?

Group-17 elements are known as:

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

Which element are present in group-1?

Who are arranged the elements in groups of three

How many elements block present in modern periodic table?

Atomic size of Neon is ____________

Which elements are present in 1st Group

How many groups are present in the modern periodic table?

Mendeleev’s periodic table was based upon the