Question

An element X has atomic number 11.at Where is it placed in themodern periodic table?
Write the formula of its oxide. What type of compound is it?
What is the action of litmus in a solution of its oxide? Why?​

Answer 1

Answer:

X IS PLACED IN THE Ist GROUP AND IIIrd PERIOD

FORMULA OF OXIDE - X2O

IT IS A IONIC COMPOUND

IT WILL TURN THE RED LITMUS TO BLUE

BECAUSE WHEN THIS SOLUTION IS MIXED WITH WATER IT GIVES OUT A BASE

Answer 2

The element X with atomic number 11 is 'Sodium'.

• The element X is placed in group 1 and period 3 in the modern periodic table as it contains only one electron in its valence shell.
• The formula of the oxide of X is X₂O. The valency of element X is +1.
• It is a compound that is ionic in nature.
• The action on the litmus paper of the oxide of element X is that it changes red litmus to blue. This happens so because it is basic in nature.
• The element forms basic oxide because it is a metal.