5 2 points
Which of these elements have 3 valence electrons?
In
1
AL
Si
2
As
N
3
4
Previous
5

me ajda upr foaovrestou  scervndo certo aims saee tdoe uerrao as ditraslquie  no caoutmapdo socorrroo

o

Explanation:

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

explanation:

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.