Give the Formula and Valency Of:

Give the formula and valency of:
cupric ………………… .

एक शब्द/वाक्यांश उत्तर

Cupric
Formula Cu
Valency +2

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अध्याय 1: The Language of Chemistry - Exercise 1 (A) [पृष्ठ ९]

अध्याय 1 The Language of Chemistry
Exercise 1 (A) | Q 8.4 | पृष्ठ ९

Write down the formulae of magnesium hydroxide.

The radius of an oxygen atom is 0.073 nm. What does the symbol ‘nm’ represent ?

Write down the formulae for the following compounds :

Magnesium hydroxide

Define ‘formula unit’ of an ionic compound. What is the formula unit of (i) sodium chloride, and
(ii) magnesium chloride ?

Fill in the blank:

Formula of iron (ill) carbonate is _____ .

Match the following:

Column A	Column B
(a) Pb(NO₃)₂	(i) rotten eggs smell
(b) CO₂	(ii) burns with a pop sound
(c) (NH₄)₂Cr₂O₇	(iii) the suffocating smell of sulphur
(d) HCI	(iv) lime water turns milky
(e) NO₂	(v) crackling sound
(f) O₂	(vi) residue swells up
(g) H₂	(vii) brown gas
(i) H₂S	(viii) supports combustion
(j) SO₂	(ix) fumes with NH₃ solution