Question

(d) Moving left to right in the second period, number of
valence electrons
(e) Moving down in the second group, number of
valence electrons
(a) Name the alkali metals. How many electrons(s) do
they have in their outermost orbit.
(b) Take any one alkali metal and write its reaction with
(i) oxygen (ii) water (iii) acid.​

Answer 1

d)increases from 1-8

e)is 2

a)lithium ,sodium,potassium,rubidium, caesium, and francium;1 electron

b)

WITH OXYGEN

2Na+2O2---------->2Na2O

with water

2Na+2H2O------------->2NaOH+H2

with HCL

2Na+2HCL----------------->2NaCl+H2