Question

The Atomic number of elements X and Yare 9 and 11 respectively. Which one of the following properties is shown by the when X combine with 7? 3. g. It is a non-conductor of electricity It has a high melting point . c. It is insoluble in water. temperature di It is gas at​

Answer 1

It has a high melting point.

Step-by-step explanation:

• Atomic no 11 means its sodium.
• Atomic no 9 means its fluorine
• Hence the compound will be

`\\ \sf\longmapsto NaF`

It will be a ionic compound so it has high melting and boiling points