Octate Isoelectronic Species Lewis Structure Formal Charge

Identify the incorrect statement among the following:

1.	Amongst isoelectronic species, the smaller the positive charge on the cation, the smaller is the ionic radius
2.	Amongst isoelectronic species, the greater the negative charge on the anion, the larger is ionic radius
3.	Atomic radius of the elements increases as one moves down the first group of the periodic table
4.	Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the periodic table

An electron-deficient compound among the following is:

1.	(SiH3)2	2.	(BH3)2
3.	PH3	4.	(CH3)2

An isostructural compound with XeF₂ among the following is:

1.	ICl2–	2.	SbCl3
3.	BaCl2	4.	TeF2

Given the following five species:

The total number of these species that do not have eight electrons around the central atom in its/their outermost shell, is/are:

1.	One	2.	Three
3.	Two	4.	Four