Answer:
I think section #3
Explanation:
When i was in science class in my memory it was always in that area
C. a long chain of carbon atoms with hydrogen atoms attached to them.
Explanation:
The answer is C a combustion’s reaction
The number of valence electrons of an element can be determined by the periodic table group (vertical column) in which the element is categorized
Explanation:
(a) mass number = atomic number + number of neutrons
(the atomic number is the number of protons of an element)
mass number of A = 11 + 12 = 23
mass number of B = 17 + 18 = 35
(b) +1 and -1, respectively
(c) A+ + B- → AB (the first plus sign and the minus sign are superscripts)
