Which statement is true?

(1) the electronegative nature of elements increases along the period

(2) the electropositive nature of elements increases along the period

(3) the chemical reactivity of elements increases along the period

(4) the I.E  of element decreases along the period

Concept Questions :-

Ionization Energy (IE)
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The most non-metallic element among the following is:

(a) Be

(b) B

(c) Mg

(d) Al

Concept Questions :-

Modern Periodic Table
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58Ce is a member of:

(a) s-block elements

(b) p-block elements

(c) d-block elements

(d) f-block elements

Concept Questions :-

Electronic Configuration
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The screening effect of 'd' electrons is :

(a) much less than s-electrons

(b) much more than s-electrons

(c) equal to s-electrons

(d) equal to p-electrons

Concept Questions :-

Screening Effect
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Transuranic elements are those which are:

(a) of higher atomic number than uranium

(b) lighter than uranium

(c) of lower atomic number than uranium

(d) of same atomic number as uranium

Concept Questions :-

Modern Periodic Table
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correct increasing order of density is:

(1)Li<K<Na<Rb<Cs

(2))Li<Na<K<Rb<Cs

(3)Cs<Rb<K<Na<Li

(4)K<Li<Na<Rb<Cs

Concept Questions :-

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General electronic configuration of outermost and penultimate shell of an atom is
(- 1)s2 (n - 1) p6 (- 1)dx ns2. If n = 4 and x = 5, the number of proton in the nucleus is:

(a) > 25

(b) < 24

(c) 25

(d) 30

Concept Questions :-

Electronic Configuration
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The maximum number of valency electrons possible for atoms in the second period of the periodic table is:

(a) 18

(b) 10

(c) 8

(d) 2

Concept Questions :-

Electronic Configuration
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If a certain element has an atomic number 19, the element is:

(a) an inert gas

(b) a metal with oxidation number +1

(c) a non-metal with oxidation number -3

(d) a metal with oxidation number -3

Concept Questions :-

Electronic Configuration
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Which of the following has the least density?

(1)Na

(2)Li

(3)Mg

(4)K

Concept Questions :-

Modern Periodic Table
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