The substance of which physical objects are composed, not counting engergies or force fields which are genearlly not counted as matter, although can contribute to the mass of an object.
Or it may be solid, liquid, mass or the 4th state of matter,plasma
The answer is Ga.
That is gallium (Ga), correctly names the element that Mendeleev predicted would be discovered and placed in the aluminum column.
Gallium (Ga) is the element that Mendeleev predicted would be discovered and placed in the aluminum column.
So the answer is Gallium (Ga) that is there in the 13th group of periodic table or in aluminium column.
Answer:
a. Here, the yellow precipitate is lead (II) iodide:

b. Here the white precipitate is barium sulfate:

c. Here the brown precipitate is iron (III) hydroxide:

d. Here, the precipitate is copper (II) hydroxide:

Explanation:
Hello.
In this case, since the precipitation reactions are characterized by the formation of a product which is highly insoluble in water, specially very heavy products having heavy metals at the cations, for each case we proceed as follows:
a. Here, the yellow precipitate is lead (II) iodide:

b. Here the white precipitate is barium sulfate:

c. Here the brown precipitate is iron (III) hydroxide:

d. Here, the precipitate is copper (II) hydroxide:

Best regards!
Hello!
answer : c
eg = octahedral, mg = square planar, sp3d2
Hope that helps!