Question

ln modern periodic table each period ends with​

Answer 1

Explanation:

Each period starts with an alkali metal and ends with an inert gas element. * The first period is a very short period with only two elements i.e., Hydrogen (H) & Helium (He). ok!!!!! end with Noble gases

Answer 2

Periods: * Each period starts with an alkali metal and ends with an inert gas element. * The first period is a very short period with only two elements i.e., Hydrogen (H) & Helium (He). select this as brainliest answee