<span>metal + acid → salt + hydrogen.zinc + sulphuric acid → zinc sulphate + hydrogen.<span>magnesium + hydrochloric acid → magnesium chloride + hydrogen.</span></span>
Answer:
For number 2, your answer is C.
Explanation:
The nucleus is positively charged because the proton is positive and a neutron is neutral. An electron has a negative charge.
The number of dots represents the amount of valence electrons, which is the same as the last digit of the elements group number in ptof.
