Question

while sodium ion (Na“) does not react
with water. It simply dissolves in water.
parent element. For ex
(Cl) is not
Ions differ from the corresp
CLASS ASSIGNMEN
Atomic mass, Molecules, Their atomicity and formulae, Molec
1. (a) What is the atomic mass unit? What is its symbol?
(b) What is the value of atomic mass unit in terms of kilogram?
2. Why is the atomic mass unit not considered a practical unit?
3. What is the atomic mass (A) of an element?
4. Define the relative atomic mass (A) of an element?
5. The atomic mass of chlorine is 35.5 atomic mass units. Calculate its
atomic mass?
6. Do atoms of all elements exist as independent (single) atoms? ​

Answer 1

Answer:

Atomic radii of sodium is larger than sodium ion because in sodium atom there are 3 shells ( atomic radii is large ) wheras in sodium ion there are only 2 shells ( atomic radii is smaller compared to Na atom )....

Answer 2

Answer:

The term “atomic mass unit” (unit symbol: amu) has been used as a unit of mass defined as one-sixteenth the mass of a single atom 16O [m(16O)=16 amu] in physics and as one-sixteenth the isotope-averaged atomic mass (equivalent to the atomic weight) of oxygen [Ar(O)=16 amu] in chemistry.

Explanation:

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