Potassium, aluminum, silicon, magnesium neon
Answer:
Adduct, donate, accept
Explanation:
Lewis acids are those having suitable vacant orbital for electron acceptance and forming a covalent bond with an electron rich species. Example:
(B has vacant 2p orbital for electron acceptance)
Lewis bases are those having energetically available unshared electrons that can be donated to an electron deficient species and form a covalent bond. Example:
(N has energetically available lone pair)
So, product of Lewis acid-base reaction is an adduct (
) where a new covalent bond is formed between B and N.
We are given that the specific heat of water is 4.18 J / g
°C. We know that the molar mass of water is 18.02 g/mol, therefore the molar
heat capacity is:
molar heat capacity = (4.18 J / g °C) * 18.02 g / mol
<span>molar heat capacity = 75.32 J / mol °C</span>
Explanation :
It is given that,
Speed of the proton, 
Magnetic field, 
Magnetic force is given by :

q is the charge of proton, 
So,


The direction of force is given by using right hand rule. So, the force will act in upward direction.
Hence, the correct option is (a) "
to the north".