Chemistry
16.09.2021 03:28
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Are the following elements an electron lender or borrower and how many electrons?
Are the following elements an electron lender or borrower and how many electrons?
calcium / gold / cobalt / copper
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calcium / gold / cobalt / copper
hadwell34
4,7(58 marks)
These are metal atoms. Hence,they have the tendency to give away (lend) electrons as each metal atoms has only 2 valence electrons which makes it easier to lose these electrons than gain.Numver of electrons give away is 2
Ksedro1998
4,4(9 marks)
62.00
Explanation:
H2 means that there are two moles of hydrogen so multiply the atomic mass by two (1.01 × 2 = 2.02)
C only has one mole sp leave 12.01 alone
And multiply oxygen by 3 because there are three moles of oxygen (15.99 × 3 = 47.97)
Add them all together!
2.02 + 12.01 + 47.97 = 62.00 for molar mass
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