Which Element Has the Electron Configuration 1s² 2s² 2p⁶ 3s²

Q96: What element and isotope has Z=

Q97: Which isotope of neon is the major

Q98: The electron configuration 1s² 2s² 2p¹ is

Q99: When 24 g of methane gas (CH₄)

Q100: An element has Z=38 and 50

Q102: How is the full electron configuration of

Q103: How much carbon dioxide is needed to

Q104: According to Leucippus, what existed in spaces

Q105: To what two variables is the speed

Q106: A material uniformly containing 30 protons