How many elements present in 7^th period?

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

The first ionization energy of sodium atom is ______

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

Mendeleev’s periodic table was based upon the

The vertical columns present in the periodic table are called __________

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

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

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

Actinide series is started from the elements:

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

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

Which element has high value of electro negativity ?

The elements or group 3 to 12 are called:

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

How many groups are present in the modern periodic table?

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

Who were trying to convert inferior metals to superior metals?

Atomic size of lithium is ___________

In which year Moseley described his periodic law?

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

Transition elements are:

Elements with atomic No 90 to 103 are called:

How many elements block present in modern periodic table?

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

Which elements are present in 1st Group

Long form of periodic table is constructed on the bases of

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

Period number tells about the:

The elements of a group show __________ properties:

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

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

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

Group-1 is also called:

Which elements are present in 2^nd period

How many elements present in 6^th period?

Normal elements are belonged to:

Atomic number of lanthanum is:

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

Which element are present in group-1?

Atomic number of actinium is:

The unit of ionization energy is:

Atomic size of Neon is ____________

Electron affinity of fluorine in kjmil-1 is

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

Actinides are belonged to period:

Lanthanide is belonged to period:

Unit of electron affinity is ___________

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

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

Element with Atomic no 58 to 71 are called:

How many periods are present in the modern periodic table?

Elements of a period show properties?

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

Mark the incorrect statement about ionization energy:

The horizontal lines present in the periodic table are called ________

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

Group-17 elements are known as:

In which year Mendeleev described his periodic law?

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

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

Lanthanides series is started from the elements:

When we move from top to bottom ionization energy __________ .

Group number tells about the:

How many elements present in 1^st period?

All transition elements are belonged to:

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

Who are arranged the elements in groups of three

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

Unit of atomic size is _________

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

The atomic radii of the elements in periodic table

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

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

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

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

All transition elements are _________ .

Along the period, which one of the following decreases:

Point out the incorrect statement about electron affinity

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