# NEET Questions Solved

The ground state electronic configurations of the elements, U,V,W,X,and Y (these symbols do not have any chemical significance) are as follows:

Determine which sequence of elements satisfy the following statements :

(i) Element forms a carbonate which is not decomposed by heating

(ii) Element is most likely to form coloured ionic compounds

(iii) Element has largest atomic radius

(iv) Element forms only acidic oxide

(a) V W Y U                                   (b) V X Y W

(b) V W Y X                                   (d) V X W U

(b) (i) Alkali metal carbonates do not decompose even at red hot $\to$V

(ii) Transition metal ions having unpaired d-electrons are coloured in aq. sol./compounds $\to$X

(iii) In case of Kr van der Waals' radius is considered, which is largest atomic radius $\to$Y

(iv) Si atom has only acid Si${O}_{2}$ $\to$W

Difficulty Level:

• 14%
• 54%
• 18%
• 16%