Question

9. Give the formula and IUPAC names of next two members of homologos series given
below
a. C3H8 b. 02 H5COOH
10. Atomic number of an element is 16. write its electronic configuration. find the number
of Valence Electrons and its valency.
11. Three elements X Y and Z belongs to 17" group but to 2" 31" and 4** period respectively.
Number of valence electrons in Y is 7. find the number of valence electrons in X and Z.
justify your answer.
12. where does aerobic respiration occur how many molecules of ATP are released during it​

Answer 1

Answer:

9.   a) propane       b) formic acid

10.  1$s^{2}$ $2s^{2}$ $2p^{6}$ $3s^{2}$ $3p^{4}$

      There are 4 valence electrons, so it's valency is -2.

11. The number of valence electrons in X and Z is 7 as X, Y and Z are in the same group. Elements in the same group have same number of valence electrons.

12. Aerobic respiration takes place in the mitochondria. 38 molecules of ATP are released during aerobic respiration.