The answer IS letter C. For magnesium to pair with chlorine and be neutral, magnesium must pair with two chlorines. Magnesium is in column 2 which means it has two valance electrons to "give away." If it gives away its two valance electrons, it becomes a +2 cation. Chlorine readily accepts only one electron, and when it does it becomes a -1 anion. So what does this mean? Well, Magnesium Chloride is made up of 1 Mg atom, and 2 Chlorine atoms because it forms a neutral compound. Mg gives 1 electron to each Cl atom forming a +2 -2 neutral compound. The Mg bares a +2 charge after giving its two valance electrons away, and each Cl bares a -1 charge after taking an electron. Hence +2 -2, which is neutral. This is why the formula is MgCl2.
Answer: all metals are conductors of electricity and so is glass. but air, water, and plastics are not conductors of electricity. so your answer is metal and glass are both conductors of electricity
Explanation:
Answer: When one thing in a <u>electric</u> circuit stops working, the whole circuit stops working.
Explanation:
your answer is Option B
there are 90 elements found naturally so option B statement is incorrect
HOPE THIS WILL HELP YOU
The naturally occurring isotopes of Li are Li-6 of mass 6.015121 amu and Li-7 of mass 7.016003 amu. The atomic mass of Li is 6.9409 amu, the percent abundance can be calculated using the following relation.
Atomic mass=m(Li-6 )×%(Li-6 )+m(Li-7 )×%(Li-7 )
Let the percent abundance of Li-6 be X thus, that of Li-7 will be 1-X, putting the values,
Or,
Or,
X=0.075
Thus, 
Thus, percent abundance of Li-6 is 0.075 or 7.5 % and that of Li-7 is 0.925 or 92.5%.
