Question

ᴡ ʜ ᴀ ᴛ ᴀ ʀ ᴇ ᴛ ʜ ᴇ ᴄ ᴏ ᴍ ᴍ ᴏ ɴ
ᴘ ʜ ʏ ꜱ ɪ ᴄ ᴀ ʟ ᴀ ɴ ᴅ ᴄ ʜ ᴇ ᴍ ɪ ᴄ ᴀ ʟ ꜰ ᴇ ᴀ ᴛ ᴜ ʀ ᴇ ᴅ ᴏ ꜰ ᴀ ʟ ᴋ ᴀ ʟ ɪ
ᴍ ᴇ ᴛ ᴀ ʟ .
ʀ ᴇ ꜰ ᴇ ʀ ꜱ ᴛ ᴏ ᴄ ʟ ᴀ ꜱ ꜱ 11 ꜱ ᴄ ɪ ᴇ ɴ ᴄ ᴇ ᴄ ʜ ᴇ ᴍ ɪ ꜱ ᴛ ʀ ʏ -ɪ ɪ
ɴ ᴏ ꜱ ᴘ ᴀ ᴍ ᴍ ɪ ɴ ɢ ᴀ ɴ ᴅ ɴ ᴏ
ᴄ ᴏ ᴘ ʏ ꜰ ʀ ᴏ ᴍ
ɢ ᴏ ᴏ ɢ ʟ ᴇ . ​

Answer 1

Answer:

$\huge\underline\purple{ANSWER}$

Common physical features of alkali metals:

(1) They are soft and can be easily cut.

(2) They have silvery white appearance. They are light coloured.

(3) Due to large atomic size, they have low density. On moving down the group the density increases with exception of K which has lower density than Na.

(4) Due to weak metallic bonding, alkali metals have low melting and boiling points.

(5) They provide characterisitc colour to flames.

(6) They show photoelectric effect. On irradiation with lightCs and K lose electrons