Question

9
The following questions are sulated to the
first 36 elements present in the periodic table
1).Name three elements which need one electron to
complete their Octet.
2) Name three elements which lose one electron to
complete their octet.
3) Name two elements which are chemically
inert.​

Answer 1

Explanation:

1.Fluorine , Chlorine and Iodine( Halogens grp7)

2.Sodium, lithium and potassium( grp1)

3.Helium, neon, argon(noble gases grp 18)

Answer 2

Answer:

1) The rule is especially applicable to carbon, nitrogen, oxygen, and the halogens, but also to metals such as sodium or magnesium. The valence electrons can be counted using a Lewis electron dot diagram as shown at the right for carbon dioxide.

2)The two elements that most commonly fail to complete an octet are boron and aluminum; they both readily form compounds in which they have six valence electrons, rather than the usual eight predicted by the octet rules.

3)The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name comes from the fact that these elements are virtually unreactive towards other elements or compounds.