The word atom comes from the Greek atomos which means indivisible, indivisible (excepted in the nuclear reactions). It was therefore perfectly suited to the concept of atom when it was developed by chemists in the early nineteenth century, ie as the smallest part of a pure body.
So the atom of aluminum will remain unchanged, whatever the reaction it will undergo, it is only its molecular form that will change.
Great question! The subatomic particles that have most of the mass in the particle are the positive proton, and the neutral neutron. Therefore, protons and neutrons are the two subatomic particles have approximately 1 atomic mass unit each.
Answer:
They are formed in the red bone marrow of bones.
D. An electron may acr with either particle like or wave like
Answer:
From least polar covalent to most polar covalent;
S-I< Br-Cl < N-H< Te-O
From most ionic to least ionic
Cs-F> Sr-Cl> Li- N> Al-O
Explanation:
Electro negativity refers to the ability of an atom in a bond to attract the shared electrons of the bond towards itself.
Electro negativity difference between two atoms is a key player in the nature of bond that exists between any two atoms. A large difference in electron negativity leads to an ionic bond while an intermediate difference in electro negativity leads to a polar covalent bond.
Based on electro negativity differences, the bonds in the answer have been arranged in order of increasing polar covalent nature or decreasing ionic nature.
