‏Some states authorize a to make healthcare decisions for patients who can't make them because they're incapacitated . O a ) healthcare proxy b ) living will O c ) durable power of attorney O d ) do - not - resuscitate order

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

answer; 4 electrons;

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally