Answer : An atom is the smallest particle into which an element can be divided and still be the same substance.
Explanation :
Atom : It is the smallest unit of an element. Every atom is composed of a nucleus.
There are three sub-atomic particles present in every atom which are electrons, protons and neutrons.
The nucleus of an atom consist of protons and neutrons.
The electrons are revolve around the nucleus and are bound to the nucleus.
Answer:
The valence electrons in the metal atom in the lattice structure can delocalize and move freely. The electrons are "loosely" connected with their parent atom in the metallic bond because most metals have excess electrons in their outer orbitals above the stable configuration.
Explanation:
Says google
Answer:
O A. A metal higher on the activity series list will replace one that is
lower.
<span>Mole ratios are important to stoichiometric calculations because they bridge the gap when we have to convert between the mass of one substance and the mass of another.</span>
No. of moles -= given mass/ molar mass
1) 9 g of H2O = 9/18 = 1/2 = 0.5 mole
2) 88g of CO2 = 88/44 = 2moles
3) 1.7 g of NH3 = 1.7/17 = 0.1 mole
