'शास्त्रिय कारणे लिहाआवर्तामध्ये डावीकडून उजवीकडे जातांना धातू गुणधर्म कमी होत जातो.'
Which of the following element pairs will form an ionic bond? 
Study the entries in the following table and rewrite them by putting the connected items in the single row: 