Offering 99 points and brainliest to best ! how many valence electrons are in an atom with the electron configuration in example a? example a: 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 4p^2 a. 22 b. 2 c. 4 d. 6

it is the most commonly accepted one

може ли да зареждате повече информация, моля

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