Related Practice Questions :

58Ce is a member of:

(a) s-block elements

(b) p-block elements

(c) d-block elements

(d) f-block elements

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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

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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

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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

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An element having the electronic configuration of its atom ns2 np2 should have similar properties to those of:

(a) sodium

(b) carbon

(c) magnesium

(d) oxygen

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