Question

History Bookmarks Develop Window Help The group of ements in periodic table is named for the alaine nature of their oxides and for the All Group 1A1) elements are reactive metals and are unusually of the aukai metals resur from them having the molar masses and atomic radi (and, thus, volumes in their periods The alkali metals mening and boling points and values forthe AHmom which down the group. The alkali metals have the ionization energies in their periods and Group 1A(1) salts have lattice energies For a given anion, the latsoe down the group due to an in the ionic radii son highest Alkali metal salts are usualy in wator Thisis due tothe highly in entropy when the crystal dissolves

Answer 1

The first group of elements are named for the alkaline (basic) nature of their oxides and basic (metal hydroxides) solutions for the elements in water.

All group 1A elements are more reactive.

the low densities of alkali metals results from them having the high molar masses largest atomic radii.

the alkali metals have low melting and boiling points high metallic bonding leads to low value for delta H which decrease dwon the group.

the alkali metal have the low ionisation energies.

Group1A salts have high lattice energy.

for a given anion lattice enrgies increase down the group due to increase in atomic radii.

Li, Be metals

B metalloid

C, N, O , F, Ne non metals.