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What is the correct answer?

4

A metal may have atomic number

A. 85

B. 32

C. 38

D. 2

Correct Answer :

C. 38


Related Questions

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4

Which of the following has highest ionisation energy?

A. Be

B. Cl

C. Ba

D. N

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4

Which of the following has the maximum size?

A. Al-

B. Ne

C. Na+

D. F-

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4

A metal may have atomic number

A. 85

B. 32

C. 38

D. 2

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4

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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4

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

A. F-<Na+g++<O2-

B. F-<O2-<Na+<Mg++

C. Mg++<F-<Na+<O2-

D. Mg++<Na+<F-<O2-

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4

Second electron affinity of the elements is always

A. positive

B. negative

C. zero

D. more than first E.A.

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4

Which of the following has minimum ionisation energy?

A. F

B. Cl

C. Br

D. I

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4

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

A. s block ele.

B. p block ele.

C. d block ele.

D. f block ele.

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4

Modem Periodic Law was given by

A. Joule

B. Moseley

C. Klechkosky

D. Meyer

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4

The lightest metal is

A. Li

B. Pb

C. Na

D. Al

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4

Which of the following have maximum size?

A. Cl

B. N2

C. F

D. Ne

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4

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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4

The element with no definite place in the periodic table is

A. At

B. H

C. N

D. Pt

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4

Which of the following has maximum electron affinity ?

A. Cl

B. Br

C. I

D. F

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4

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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4

Lother Meyer plotted a graph of

A. Atomic volume versus atomic number

B. Atomic radii versus atomic weight

C. Atomic weight versus mass number

D. Atomic volume versus atomic weight

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4

3.Atomic number of an element X is 34, it belongs to

A. IV period, VIA group

B. IV period, IIA group

C. V period, III B group

D. IV period, VII A group

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4

The successive ionisation energies of an atom of an element A are:
900 kJ mole1, 1757 kJ mole-1, 14850 kJ mole-1 respectively. The element is most likely to be

A. B

B. Be

C. F

D. Ba

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4

Which of the following species have minimum size?

A. Br-

B. S-2

C. Ne

D. K+

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4

Which of the following is an inert gas?

A. Oxygen

B. Nitrogen

C. Argon

D. Hydrogen

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4

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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4

Which of the following has maximum ionisation energy?

A. Li

B. Ba

C. Cl

D. Be

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4

The first atom with maximum number of d-electrons is with atomic number

A. 27

B. 46

C. 36

D. 29

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4

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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4

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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4

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

A. 18

B. 36

C. 8

D. 9

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4

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

A. 96.5×1015sec-1

B. 1.065×1014sec-1

C. 1.065×1012sec-1

D. 1.065×1015sec-1

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4

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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4

Which of the following elements have maximum electronegativity?

A. Cl

B. Br

C. F

D. C

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4

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

A. Ru

B. Be

C. Fr

D. Rb