Which of the following elements has the electronic configuration:1s²2s²2p⁶3s²3p¹? [₁₁Na, ₁₃A1,
₁₄N,₁₆S]

The following properties are characteristics of transition elements except

Which of the following ions is isoelectronic with neon? [₃Li, _{3F, 10Ne, 17CI,19K]}

Which of the following electronic configurations correctly represents an element in period 3 of the periodic table?

An element Q forms a compound QCI₅. In which group of the periodic table is Q?