61. Which element would be most similar to carbon?
(a) Nitrogen
(b) Oxygen
(b) Boron
(d) Silicon
answer
(d) Silicon
62. S-block elements are?
(a) Metals
(b) Metalloids
(b) non-.metals
(d) Transition
answer
(a) Metals
63. Which of the following, would have the largest, ionization energy?
(a) Na
(b) Al
(c) H
d) He
answer
d) He
64. Elements in a __________ have similar chemical properties?
(a) Period
(b) Both a and B
(c) Group
(d) None of these
answer
(c) Group
65. An element has 8, electrons in its valence shell. it is a member of?
(a) Alkali family
(b) Noble family
(c) Halogen family
(d) Carbon family
answer
(b) Noble family
66. The modern periodic, table is based on?
(a) Atomic number
(b) Neutron number
(c) Mass number
(d) Isotope number
answer
(a) Atomic number
67. Shielding effect is due to?
(a) Neutron
(b) Proton and neutron
(c) Proton
(d) Electron
answer
(d) Electron
68. What is the name of the attracting force that holds atoms in substances together?
(a) Bond
(b) Chemical bond
(c) Stability
(d) Argon
answer
(a) Bond
69. What is the name of the force that attracts atoms together to create molecules?
(a) Bond
(b) Chemical bond
(c) Stability
(d) Argon
answer
(b) Chemical bond
70. What happens when two atoms are connected by sharing electrons?
(a) Bond
(b) Covalent bond
(c) Ionic band
(d) Coordinate covalent bond
answer
(b) Covalent bond
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