The number of proton in the nucleus of an atom is its Atomic Number.
Answer:
c
Explanation:
there are billions of cells in living things. We are made out of millions of cells
Answer:
A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space.
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Answer:
M2(So4)2
Explanation:
Here,
The symbol of metal is M and the symbol of sulphate is So4.
And the,
Valency of metal is 3 and the valency of sulphate is 2..
SO,
M So4
3 2
And when we cross multiply it the formula will be,
M2(So4)2
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