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1996 WAEC Chemistry Theory (a) List two gases which are monatomic (b) Mention one gas which forms: (i) dense...

Chemistry
WAEC 1996

(a) List two gases which are monatomic

(b) Mention one gas which forms:

(i) dense white fumes with ammonia vapour

(ii) yellow precipitate with ammoniacal silver trioxonitrate (V) solution.

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Explanation

(a) Helium or Neon or Argon (i.e. all noble gases)

(b)(i) Hydrogen chloride gas

(ii) Ethyne of propyne or but-1-nye.

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