Advertisements
Advertisements
Question
Element A has 2 electrons in its M shell. Element B has atomic number 7.
If the compound formed between A and B is melted and an electric current is passed through the molten compound, the element A will be obtained at the ______ and B at the ______ of the electrolytic cell.
Advertisements
Solution
If the compound formed between A and B is melted and an electric current is passed through the molten compound, then element A will be obtained at the cathode and B at the anode of the electrolytic cell.
RELATED QUESTIONS
State the reason to explain why covalent compounds "have low melting and boiling points."
what substance is graphite made?
The number of carbon atoms joined in a spherical molecule of buckminsterfullerene is:
(a) fifty
(b) sixty
(c) seventy
(d) ninety
An element E exists in three allotropic forms A, B and C. In allotrope A, the atoms of element E are joined to form spherical molecules. In allotrope B, each atom of element E is surrounded by three other E atoms to form a sheet like structure. In allotrope C, each atom of element E is surrounded by four other E atoms to form a rigid structure.
(a) Name the element E.
(b) What is allotrope A.
(c) What is allotrope B?
(d) What is allotrope C?
(e) Which allotrope is used in making jewellery?
(f) Which allotrope is used in making anode of a dry cell?
State the type of bonding in the following molecule.
Hydroxyl ion
Give two example in following case:
Gaseous polar compounds
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Methane
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
Write scientific reason.
Benzene compounds are called aromatic compounds.
Which of the following compounds of carbon does not consist of ions?
