Answer:A
Explanation: number that shows the total atomic mass of the substance
26°F
.............................................................
A. Gallium
'cause he predicted it's physical properties before it's discovery! After that, it was proved that Mendeleev's periodic table was useful.
Hope this helps!
FOLLOW ME FOR CLEARING YOUR NEXT DOUBT
<h2>Answer:</h2>
<u>By wrapping the wire along a solenoid and connecting it to electricity</u>
<h2>Explanation:</h2>
If you wrap a copper wire into coils and run an electrical current through it, you will create a magnetic field. If you rotate a permanent magnet as opposed to an item that has been magnetized inside a coil of copper wire, you can create an electrical current. The strength of magnetic field generated is proportional to the amount of current through the winding.
