Name the alkali metals in order of increasing atomic masses and write their electronic configuration .

Name alkali metals in increasing order of atomic number.

Electronic Configuration Of Atoms

The alkali metals have an outer electronic configuration of

The electronic configuration of Ag atom is

The valence shell electronic configuration of alkali metals is

Correct statement about the alkali metals include that (i) The first ionization energy decreases down the group (ii) An unpaired electron is present in an s-orbital (iii) Chemical reactivity increases with increasing atomic number (iv) Their ions have the electronic configuration of Noble gases. The correct statements are

Arrange the alkali metals in increasing order of their density.

Write the names of first four members of the halogen family. Write their symbols in the order of increasing atomic number. How are their melting points expected to be related to their atomic numbers ?