Chemistry
An element Z has atomic number 16. Answer the following questions:
(a) State the period and group to which Z belongs.
(b) What kind of a compound is formed between Z and hydrogen ?
Related Questions
Identify the gas that is produced in each of the following cases:
(i) sodium propionate is heated with soda lime.
(ii) potassium sulphite is treated with dilute hydrochloric acid.
(iii) Sulphur is treated with concentrated nitric acid.
(iv) a few crystals of KNO3 are heated in a hard glass test tube.
(v) concentrated hydrochloric acid is made to react with manganese dioxide.
Give the structural formula of the following
(i) diethyl ether
(ii) 1-propanal
(iii) acetone
(iv) 1, 2, dichloroethane
(v) ethanoic acid
M is a metal above hydrogen in the activity series and its oxide has the formula M2O. This oxide when dissolved in water forms the corresponding hydroxide which is a good conductor of electricity. In the above context answer the following:
(a) What kind of combination (bond) exists between M and O?
(b) How many electrons are there in the outermost shell of M?
In electrolysis of molten lead bromide
(a) State the reaction taking place at the cathode.
(b) Which electrode: anode or cathode is the oxidising electrode ? Why?