Answer:
If pi is used as pi 113.1
or
If 3.14 is used as pi 113.04
Step-by-step explanation:
A = pi(r)²
Answer:
pi*2^2*2sqrt3/3
if pi=3
8sqrt3
Step-by-step explanation:
Answer: it is A that right
Answer:
The correct option (c) "is held together by ionic bonds".
Step-by-step explanation:
Table salt is NaCl. It is a combination of Sodium and Chlorine.
There is 1 valance electron in sodium. Its electronic configuration is 2,8,1
The electronic configuration of Chlorine is 2,8,7. It means that it needs 1 electron so that its octet gets completed.
Na transfers one electron to Cl. It becomes Na⁺. Cl gains one electron From Na. It becomes Cl⁻.
As a resuslt, Na⁺ and Cl⁻ forms. Both Na and Cl are ions. They held together by ionic bonds.
