Which of the following has minimum ionisation energy

Question

Which of the following has minimum ionisation energy

A. Ca

B. In

C. Te

D. Rb

Correct Answer :

D. Rb

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The differentiating electron enters in the penultimate energy level in the case of

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The successive ionisation energies of an atom of an element A are:
$900 k J m o l e^{1}$ , $1757 k J m o l e^{- 1}$ , $14850 k J m o l e^{- 1}$ respectively. The element is most likely to be

A. B

B. Be

C. F

D. Ba

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

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Law of octaves was given by

A. Meyer

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

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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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An element has atomic number 2. It belongs to

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Which of the following has maximum ionisation energy?

A. Li

B. Ba

C. Cl

D. Be

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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. Ca

B. In

C. Te

D. Rb

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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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Which of the following species have minimum size?

A. $B r^{-}$

B. $S^{- 2}$

C. $N e$

D. $K^{+}$

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

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Ionisation energy is the amount of energy required to remove

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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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Which of the following conform both cation and anion?

A. I

B. Cl

C. K

D. F

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Arrange the following set of atoms in the increasing order of electron affinity: F, Sr, Ge, Se

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

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

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The smallest ion amongst the following

B. $K^{+}$

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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

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Which of the following has maximum electron affinity ?

A. Cl

B. Br

C. I

D. F

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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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Second electron affinity of the elements is always

C. zero

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The heaviest element is

A. Cs

B. Na

C. Hg

D. U

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

A. 18

B. 36

C. 8

D. 9

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Which of the following is not an s-block element?

A. Ru

B. Be

C. Fr

D. Rb

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

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Answer 1

A. s block ele.

Answer 2

B. p block ele.

Answer 3

C. d block ele.

Answer 4

D. f block ele.

Answer 5

A.

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

Answer 6

B.

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

Answer 7

C.

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

Answer 8

D.

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

Answer 9

B. Mendeleev

Answer 10

C. Moseley

Answer 11

D. Newland

Answer 12

A. increases

Answer 13

B. decreases

Answer 14

C. increases and decreases

Answer 15

D. remains the same

Answer 16

A. O group

Answer 17

B. III A group

Answer 18

C. VI group

Answer 19

D. II B group

Answer 20

A. value of principal quantum number increases

Answer 21

B. effective nuclear charge increases

Answer 22

C. atomic size increases

Answer 23

D. nuclear charge increases

Answer 24

A. the most loosely bound electron from an isolated gaseous atom

Answer 25

B. an electron from an atom of an element

Answer 26

C. an electron from an isolated gaseous atom

Answer 27

D. an electron from covalently bonded atom in a molecule

Answer 28

A. Ge, Se, Sr. F

Answer 29

B. Se, Ge. Sr. F

Answer 30

C. Sr, Ge. Se. F

Answer 31

D. F, Sr, Ge. Se

Answer 32

A. atomic weight

Answer 33

B. atomic number

Answer 34

C. atomic volume

Answer 35

D. none of these

Answer 36

A. electron affinity decreases

Answer 37

B. metallic character decreases

Answer 38

C. ionisation energy decreases

Answer 39

D. atomic mass decreases

Answer 40

A.

S i^{+ + + 1}

Answer 41

C.

A t^{1 + 1}

Answer 42

D.

M g^{+ 1}

Answer 43

A.

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

Answer 44

B.

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

Answer 45

C.

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

Answer 46

D.

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

Answer 47

A. positive

Answer 48

B. negative

Answer 49

D. more than first E.A.

Answer 50

A. s-block elements

Answer 51

B. p-block elements

Answer 52

C. d-block elements

Answer 53

D. inert gases

Which of the following has minimum ionisation energy

Correct Answer :

Show all Periodic Classification of Elements MCQ

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