What element is 1s2 2s2 2p6 3s1 3p6 3d10 4s2 4p4?

Answer 1

Germanium

Answer 2

The number of electrons = 33, meaning the protons must also equal 33. Protons = atomic number, so the element is no. 33 on the Periodic Table - it's Ar, arsenic.

Answer 3

electron configuration

Answer 4

Selenium

Answer 5

Calcium has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 (atomic number 20)

H 1s^1, Li 2s^1, Na 3s^1, K 4s^1, so Ca is 4s^2.

Also written as [Ar]4s2. Only the 4s2 part really matters-- everything before it is implied.

See 'Principles of Modern Chemistry' 5th Edition, Oxtoby, Gillis, Nachtrieb.

Answer 6

1s2 2s2 2p6 3s2 3p6 4s2 3d1 is the electron configuration for the element Scandium (Sc).

Answer 7

aluminium

Answer 8

Al

Answer 9

Potassium

Answer 10

it's Iron.