1. All atoms of gold exhibit the same properties. Do you agree?
2. An atom maintains its properties through all physical and chemical changes. Explain with the help of an example.
3. Ozone is a triatomic molecule. Why?
4. The valency of sodium is 1. why?
Answers
Answer:
1. No, a broken atom of gold will not have the same properties of an atom of gold. A broken gold atom is referred to as an ion and does not have the same chemical properties as an intact atom of gold. A gold atom, in fact all atoms are made up of smaller components called protons, neutrons, and electrons.
2. So an atom maintains its properties throughout the physical and chemical changes. For example,a price of iron had the property of being attracted towards a magnet. If it's broken down into smaller pieces ,the smallest particle that is the atom of iron will retain the property of an atom.
3. Ozone is considered triatomic because it is composed of three atoms while phosphorous is composed of four elements therefore it considered as tetratomic molecule.
4. Valency of Sodium
The electronic configuration of sodium can be written as 2, 8, 1. 2, 8, 1 electrons are distributed in the shells K, L, M respectively. Therefore, valence electron in sodium is 1 and it needs to lose 1 electron from the outermost orbit to attain octet. Hence, the valency of sodium is 1.