Which of the following anion is colourless?
Permanganate ion
Dichromate ion
Chromate ion
Nitrate ion
Dicromate ion is orange in colour. The colour of permanganate ion is pink or purple. Chromate ion is yellow in colour. Nitrate ion is colourless.
(a) Who gave the law of constant proportion?
(b) Write symbols of the following Ions :
(i) Ferric ion (ii) Calcium ion (iii) Peroxide ion (iv) Sulphate ion (v) Nitrate ion