Answer:
It is either the third or fourth statement.
Explanation:
This is because exothermic reactions give off heat.
Nona= 9, hepta= 7, hexa= 6, tetra= 4
Answer:
C
Explanation:
A- incorrect, not in alphabetical order
B- incorrect, symbol for salt in NA not SA
C- correct
D- incorrect, not based on discovery
Lithium,
Electrons are 3
Protons are 3
Neutrons are 4