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Ch 1 ( che old)

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  • The complete electronic structure of oxygen is ......( atomic number=8)
    1s² 2s² 2p⁴
  • Which has larger atomic size? [ C⁶ Or Si¹⁴]
    Si
  • The ionization energies of elements depend on the electronic structures.
    True
  • Put them in order from the largest size to smallest size.[ Cu+, Cu, Cu²+]
    Cu, Cu+, Cu²+
  • Which has the smallest atomic size among them? [ Li³, Be⁴, B⁵].
    B⁵
  • Atomic radii [ increase, decrease, remain the same] across a period.
    decrease
  • Put them in order from the smallest size to largest size.[ Cl+, Cl, Cl-]
    Cl+, Cl, Cl-
  • [F‐, F+, F] is stabilized by electron octet.
    F-
  • The nucleus ifself has the ....... charge.
    positive
  • The elements to the left of the the dark line are non-metals.
    False
  • The valance of carbon is [ 3, 4, 2].
    4
  • Noble gases are electronegative elements.
    False
  • The essential electronic structure of Al is ..... (atomic number=13)
    3s² 3p¹
  • Halogens have the highest electron affinities.
    True
  • The elements along each side of the dark line except Al are called .....
    metalloids
  • [ O, Ne, F] has the highest ionization energy.
    Ne
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