Question

write the electronéc configuration
of Na, K, CR.​

Answer 1

Answer:

Explanation:

electronic configuration of Na,K,Cr

Na =1s²2s²2p⁶3s¹

K =1s²2s²2p⁶3s²3p⁶4s¹

Cr =1s²2s²2p⁶3s²3p⁶4s¹3d⁵(half filled configuration)

Answer 2

Answer:

Explanation:

1]SODIUM

When we write the configuration we'll put all 11 electrons in orbitals around the nucleus of the Sodium atom. ... Therefore the sodium electron configuration will be 2,8,1

2]POTASSIUM

When we write the configuration we'll put all 19 electrons in orbitals around the nucleus of the POTASSIUM atom. ... Therefore the POTASSIUM electron configuration will be 2,8,8,1

3]CHROMIUM

When we write the configuration we'll put all 24 electrons in orbitals around the nucleus of the CHROMIUM atom. ... Therefore the CHROMIUM electron configuration will be 2,8,8,6