Question

Why does the melting and boiling point of metals decrease down the group in the periodic table?

Answer 1

B coz atomic size increases :)

Answer 2

@chmvijay

Answer 3

noo effective nuclear charge decreases and lattice energy decreases :)

Answer 4

ohh i see, so when those bonds break wee see that energy in the form of bubbles?

Answer 5

generally the hardness decreases (The bonding in metals involves the attraction between free negative electrons moving between positively ionised metal atoms (M+ ions). As the atomic radius increases the charges are further apart and the electrical attractive force is reduced. This weaker bonding results in a weaker structure with a lower melting/boiling point.)

Answer 6

Thank you :) @chmvijay

Answer 7

lemme delete all these comments now, we are spamming this guys post haha

Answer 8

okay, hey so are u in college or hishschool

Answer 9

is the moment for a sphereical shell of radius R \[\frac{ 2 }{ 3 }mR ^{2}\]

Answer 10

o cool

Answer 11

when u say moment, do u mean that moment of inertia calculation?

Answer 12

yes....its 1:30 so I am probably not even in the ballpark of relevant atm

Answer 13

u can do moments with that triple integral method