Multiple Choice Question Answer XXXXI — task. Science CBSE, Class 9.

PDF chapter test TRY NOW

1. The triad of nuclei that is isotonic is -

\(_{6}^{14}\textrm{C}\), \(_{7}^{14}\textrm{N}\), \(_{9}^{19}\textrm{F}\)
\(_{6}^{14}\textrm{C}\), \(_{7}^{14}\textrm{N}\), \(_{9}^{17}\textrm{F}\)
\(_{6}^{12}\textrm{C}\), \(_{7}^{14}\textrm{N}\), \(_{9}^{19}\textrm{F}\)
\(_{6}^{14}\textrm{C}\), \(_{7}^{15}\textrm{N}\), \(_{9}^{17}\textrm{F}\)

2. Pick out the isoelectronic structures from the following - (I). \(CH_3{^+}\) (II). \(H_3O^+\) (III). \(NH_3\) (IV). \(CH_3{^-}\)

I and II
I and III
II, III, IV
III and IV

Login or Fast registration

Previous exercise

Exit to the topic

Did you find an error?

Register for free to see more content

Register for free to see more content