The correct option is B.
Mendeleev was the one who originated the idea of arranging elements in the periodic table according to their chemical and physical properties. He left spaces in the periodic table and predicted the discovery of those elements that had not been discovered then. One of these elements is Gallium. He predicted that gallium is going to be a metal and he gave the properties that the element will possess. He also predicted that the element gallium will be placed under aluminium in the periodic table.
Answer: Intrusive rock also called plutonic rock. They are formed from magma forced into older rocks at depths within the earths crust.
Explanation:
Answer:
Helium has atomic mass 4.002602.
So the answer to yr question is helium.
A base and an Acid always react to form a salt and water
So, HCl + NaOH —> NaCl + HOH
Answer: They digest excess or worn out organelles, food particles, and engulfed viruses or bacteria.
Explanation:
