Answer:
In chemistry and physics, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a
Explanation:
True. Modern theory of Atom is still using the proposed ideas of Dalton, Thomson and Rutherford.
Explanation:
- Dalton created his atom theory - He said that all matter is made up of atoms and atoms can’t be created nor destroyed or divided into tiny particles. In the same element, all atoms will be identical in size and mass but atoms in the one element will be different in size and mass from the atoms in the other elements. Atoms of different elements combined and forming compounds.
- Thomson found that inferred atoms and negative electrons also contains the negative particles. He also concluded that there was a mass of positively charged material. He explained this with the Raisins Bun model.
- Using Gold Foil Experiment Rutherford found the positively charged nucleus in the centre of every atom. When he was doing this experiment, the positive particles which he passed through the foil got reflected at the centre. This led Rutherford to conclude about the positively charged nucleus at the centre. And he also found about revolving electrons around the nucleus because, in his experiment, some of the positive particles got attracted near the centre.
Answer:
The pH at the equivalence point is 7.0.
Explanation:
This is because the solution only contains water and a salt that is neutral.
Since neither H+ or OH-, molecules remain in the solution.
We can conclude that the equivalence point is 7.0.
Don't bet any money on this but I think its [Pt(NH3)3] Cl2
The answer is C. The water will boil at a higher temperature. This is because the solute is an impurity that raises the boiling point and lowers the melting point of water.
