A, B, and C are three elements with atomic numbers 6, 11 and 17 respectively : Which of these can form ionic as well as covalent bond ?

A, B, and C are three elements with atomic numbers 6, 11 and 17 respectively : Which of these cannot form covalent bond ? Why ?

A , B and C are three elements with atomic numbers 6, 11 and 17 respectively. i) Which of these from ionic bond ? Why ?

Elements X, Y have atomic numbers 9 and 12 respectively. Which one of these a) forms negative ion ?

Elements X,Y have atomic numbers 9 and 12 respectively. Which one of these forms positive ion ?

A, B and C are atoms of elements with atomic number Z, Z+1 and Z+2 respectively. If 'B' has octet configuration, the bond formed between 'A' and C predominently is

A and B are elements with atomic numbers 16 and 17. Write different combinations of binary compounds known from them.

Among the elements A,B,C and D having atomic numbers 9,10,11 and 12 respectively the correct order of ionisation energies is

A, B and C are three elements forming part of a compound in oxidation states of +2, +5 and -2 respectively. What could be the compound?

11, 12, 13 and 14 are the atomic numbers of the elements Na, Mg, Al and Si respectively. Which element have more atomic radius ?