Arrange the following in order of their increasing atomic number:
Si, Ne, Mg, S, C
C, Ne, Mg, Si, S
C, Ne, Si, S, Mg
S , C, Mg, Si, Ne
C, Ne, Mg, S, Si
C, Ne, Mg, Si, S is the correct order.
C=6, Ne=10, Mg=12, Si=14, S=16 are the respective Atomic Numbers.
Question 17 Arrange the following elements in the order of their decreasing metallic character Na, Si, Cl, Mg, Al (a) Cl > Si >Al > Mg >Na (b) Na >Mg >Al >Si > Cl (c) Na > Al > Mg > Cl > Si (d) Al > Na> Si > Ca> Mg
The first ionistation enthalpies of Na, Mg, Al, and Si are in the order (a) Na< Mg > Al < Si (b) Na> Mg > Al > Si (c) Na< Mg< Al< Si (d) Na> Mg> Al < Si
Na+.Mg2+,Al3+ and Si4+ are isoelectronic. The order of their ionic size is