Periodic classification of elements

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14 elements after actinium is called

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a. Lanthanides

b. Actinides

c. D-block elements

d. p- block elements

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Which halogen has the smallest electron affinity?

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The oxide of which of the following elements will be acidic in character

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An element has an atomic number of 15 with which of the following elements will it show similar chemical properties.

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Be (4)

b. Ne (10)

c. N(7)

d. O (8)

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Identify the wrong sequence of the elements in a group

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a. Ca, Br, Ba

b. Cu, Au, Ag

c. N,P, As

d. Cl, Br, I

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Ionization energy depends upon

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A. Nuclear charge

B. Atomic size

C. Shielding effect

D. I.E depends upon all of the above and nature of orbital

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Higher negative value of electron affinity means

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A. Atom will lose electron easily

B. Atom will gain electron easily

C. Atom may form di-positive ion

D. The meaning is unknown

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Which of the following ions are paramagnetic in character?

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(A) Zn2+

(B) Cu+

(D) Ag+

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The ionization energy of nitrogen is more than oxygen because of _______

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a) More attraction of electrons by the nucleus

b) More penetration effect

c) The extra stability of half filled p – orbital

d) The size of nitrogen atom is smaller.

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