Ionisation energy of potassium is $425 k J m o l^{- 1}$ . The minimum frequency of a photon that can effect the ionisation is

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Ionisation energy of potassium is $425 k J m o l^{- 1}$ . The minimum frequency of a photon that can effect the ionisation is

A. $96.5 \times 10^{15} s e c^{- 1}$

B. $1.065 \times 10^{14} s e c^{- 1}$

C. $1.065 \times 10^{12} s e c^{- 1}$

D. $1.065 \times 10^{15} s e c^{- 1}$

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With the increase in atomic number in a period of the periodic table

A. electron affinity decreases

B. metallic character decreases

C. ionisation energy decreases

D. atomic mass decreases

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Which of the following has maximum ionisation energy ?

A. Li

B. Be

C. C

D. B

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Elements whose atoms have incompletely filled penultimate and anti-penultimate energy levels are known as

A. Inner Transition elements

B. Representative elements

C. Inert elements

D. Noble gases

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$O^{2 -}$ , $F^{F -}$ , $N a^{+}$ and $M g^{2 +}$ are isoelectronic, the order of increasing size is

A. $F^{-} < N a^{+} g^{+ +} < O^{2 -}$

B. $F^{-} < O^{2 -} < N a^{+} < M g^{+ +}$

C. $M g^{+ +} < F^{-} < N a^{+} < O^{2 -}$

D. $M g^{+ +} < N a^{+} < F^{-} < O^{2 -}$

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Law of octaves was given by

A. Meyer

B. Mendeleev

C. Moseley

D. Newland

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Which of the following has maximum electron affinity ?

A. Cl

B. Br

C. I

D. F

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Ionisation energy of potassium is $425 k J m o l^{- 1}$ . The minimum frequency of a photon that can effect the ionisation is

A. $96.5 \times 10^{15} s e c^{- 1}$

B. $1.065 \times 10^{14} s e c^{- 1}$

C. $1.065 \times 10^{12} s e c^{- 1}$

D. $1.065 \times 10^{15} s e c^{- 1}$

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Elements belonging to the same period are

A. Si, N, O

B. Li, Be, Mg

C. Sc. Ti. V

D. Cu, Zn, Cd

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The general electronic configuration of s-block elements is

A. $n s^{1 - 2}$

B. $n s^{2} p^{6}$

C. $n s^{1}$

D. $n s^{0 t o 2}$

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The heaviest element is

A. Cs

B. Na

C. Hg

D. U

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Elements in the same vertical column has same

A. valence shell electronic configuration

B. electronic configuration

C. atomic number of isotopes

D. atomic size

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IV Period has.........elements.

A. 18

B. 36

C. 8

D. 9

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An element A has atomic number 7. It will have properties similar to the element with atomic number

A. 85

B. 57

C. 26

D. 51

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Which of the following has minimum ionisation energy?

A. F

B. Cl

C. Br

D. I

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Which of the following elements have maximum electronegativity?

A. Cl

B. Br

C. F

D. C

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Which of the following is an inert gas?

A. Oxygen

B. Nitrogen

C. Argon

D. Hydrogen

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In C, N, O and F the electronegativity

A. decreases from C to F

B. decreases from C to O and then increases to F

C. increases from O to C and then decreases to F

D. increases from C to F

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In the periodic table on moving from left to right across a period, the metallic character of elements

A. increases

B. decreases

C. increases and decreases

D. remains the same

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The smallest ion amongst the following

A. $S i^{+ + + 1}$

B. $K^{+}$

C. $A t^{1 + 1}$

D. $M g^{+ 1}$

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The lightest metal is

A. Li

B. Pb

C. Na

D. Al

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Which of the following elements is not liquid at room temperature, i.e., 25°C?

A. Hg

B. Br

C. Cl

D. Cs

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Which of the following atoms is paramagnetic?

A. Zn

B. N

C. Ca

D. Sr

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An atom of an element has electronic configuration $(A r) 4 s^{2} 3 d^{5}$ , the element belongs to block

A. s

B. p

C. f

D. d

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In a Lother Meyer curve sodium occurs at

A. bottom

B. peak

C. some point on the curve

D. middle of the curve

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On moving across a period from left to right the ionisation energy increases because

A. value of principal quantum number increases

B. effective nuclear charge increases

C. atomic size increases

D. nuclear charge increases

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Which of the following have maximum size?

A. $C l$

B. $N_{2}$

C. $F$

D. $N e$

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The pair of elements that exhibit diagonal relationship is

A. Li-Mg

B. Al-Na

C. Ne-Ar

D. Si-P

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Modem Periodic Law was given by

A. Joule

B. Moseley

C. Klechkosky

D. Meyer

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Which of the following has the maximum size?

A. $A l^{-}$

B. $N e$

C. $N a^{+}$

D. $F^{-}$

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In the Mendeleef's periodic table properties of the elements are the periodic function of their

A. atomic weight

B. atomic number

C. atomic volume

D. none of these

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Accepted Answer

D.

1.065 \times 10^{15} s e c^{- 1}

Ionisation energy of potassium is $425 k J m o l^{- 1}$ . The minimum frequency of a photon that can effect the ionisation is

Correct Answer :

Show all Periodic Classification of Elements MCQ

Related Questions

With the increase in atomic number in a period of the periodic table

Which of the following has maximum ionisation energy ?

Elements whose atoms have incompletely filled penultimate and anti-penultimate energy levels are known as

$O^{2 -}$ , $F^{F -}$ , $N a^{+}$ and $M g^{2 +}$ are isoelectronic, the order of increasing size is

Law of octaves was given by

Which of the following has maximum electron affinity ?

Ionisation energy of potassium is $425 k J m o l^{- 1}$ . The minimum frequency of a photon that can effect the ionisation is

Elements belonging to the same period are

The general electronic configuration of s-block elements is

The heaviest element is

Elements in the same vertical column has same

IV Period has.........elements.

An element A has atomic number 7. It will have properties similar to the element with atomic number

Which of the following has minimum ionisation energy?

Which of the following elements have maximum electronegativity?

Which of the following is an inert gas?

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In the periodic table on moving from left to right across a period, the metallic character of elements

The smallest ion amongst the following

The lightest metal is

Which of the following elements is not liquid at room temperature, i.e., 25°C?

Which of the following atoms is paramagnetic?

An atom of an element has electronic configuration $(A r) 4 s^{2} 3 d^{5}$ , the element belongs to block

In a Lother Meyer curve sodium occurs at

On moving across a period from left to right the ionisation energy increases because

Which of the following have maximum size?

The pair of elements that exhibit diagonal relationship is

Modem Periodic Law was given by

Which of the following has the maximum size?

In the Mendeleef's periodic table properties of the elements are the periodic function of their

Also checkout

Ionisation energy of potassium is 425 kJ mol-1. The minimum frequency of a photon that can effect the ionisation is

Correct Answer :

Show all Periodic Classification of Elements MCQ

Related Questions

With the increase in atomic number in a period of the periodic table

Which of the following has maximum ionisation energy ?

Elements whose atoms have incompletely filled penultimate and anti-penultimate energy levels are known as

O2-, FF-, Na+ and Mg2+ are isoelectronic, the order of increasing size is

Law of octaves was given by

Which of the following has maximum electron affinity ?

Ionisation energy of potassium is 425 kJ mol-1. The minimum frequency of a photon that can effect the ionisation is

Elements belonging to the same period are

The general electronic configuration of s-block elements is

The heaviest element is

Elements in the same vertical column has same

IV Period has.........elements.

An element A has atomic number 7. It will have properties similar to the element with atomic number

Which of the following has minimum ionisation energy?

Which of the following elements have maximum electronegativity?

Which of the following is an inert gas?

In C, N, O and F the electronegativity

In the periodic table on moving from left to right across a period, the metallic character of elements

The smallest ion amongst the following

The lightest metal is

Which of the following elements is not liquid at room temperature, i.e., 25°C?

Which of the following atoms is paramagnetic?

An atom of an element has electronic configuration (Ar) 4s23d5, the element belongs to block

In a Lother Meyer curve sodium occurs at

On moving across a period from left to right the ionisation energy increases because

Which of the following have maximum size?

The pair of elements that exhibit diagonal relationship is

Modem Periodic Law was given by

Which of the following has the maximum size?

In the Mendeleef's periodic table properties of the elements are the periodic function of their

Also checkout

Ionisation energy of potassium is $425 k J m o l^{- 1}$ . The minimum frequency of a photon that can effect the ionisation is

$O^{2 -}$ , $F^{F -}$ , $N a^{+}$ and $M g^{2 +}$ are isoelectronic, the order of increasing size is

Ionisation energy of potassium is $425 k J m o l^{- 1}$ . The minimum frequency of a photon that can effect the ionisation is

An atom of an element has electronic configuration $(A r) 4 s^{2} 3 d^{5}$ , the element belongs to block