Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
89 views
in Chemistry by (67.0k points)
closed by
The ions of NaF and MgO all have the same number of electrons and internuclear distances are about the same (235 pm and 215 pm ). Why are then the melting points of NaF and MgO so different (`992^@C` and `2642^@C`)?

1 Answer

0 votes
by (70.1k points)
selected by
 
Best answer
In `Mg^(2+)O^(2-)` , both the ions carry two units of charge whereas in `Na^+ F^-` , each ion carries only one unit charge. Hence, electrostatic forces of attraction in MgO are stronger.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...