It tends to in increase because the size of the atoms increase.
Answer: The number of protons and the number of neutrons determine an element's mass number.
Explanation:
Answer:
+ axit
CH2=CH-CH2-COOH,
CH3-CH=CH-COOH (tính cả đồng phân hình học)
CH2=C(CH3)-COOH.
+ este
HCOOCH=CH-CH3 (tính cả đồng phân hình học)
HCOO-CH2-CH=CH2,
HCOOC(CH3)=CH2.
CH3COOCH=CH2
CH2=CH-COOCH3
<span> the line-emission spectrum of an atom is caused by the energies released when electrons. releases energy of only certain values. </span>
