Answer: D. ➡️⬅️
Explanation: I just knew the answer ;)
The elements which have similar behavior are Barium, strontium and beryllium.
Explanation:
Organic compound, any of a large class of chemical compounds in which one or more atoms of carbon are covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen. The few carbon-containing compounds not classified as organic include carbides, carbonates, and cyanides.
Answer:

Explanation:
Electric field strength= Force/unit charge
E= (kQq/r²)/q ₓ r
where r is the unit vector in the direction of unit charge
E= 
Melting: as mantle material rise toward the divergent plate boundary the pressure is reduced which causes melting