0
because the bond enthalpy decreases down the group
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
Why thermal stability of alkali metal hydride decreases down the group?
As the size of alkali metals increases down the group the M-H bond becomes weaker hence its stability decreases from LiH to CsH
Why Thermal stability increases when going down the group?
as metallic nature decreses
Which trend decreases for metals down a group?
Melting Point
Why does electro negativity decrease while going down the periodic table?
Down the group the size of atom increases. Hence the force of attraction between the nucleus and the electrons of the next atom decreases. Or in other words, the electronegativity decreases down the group.
Which element in group two is most metallic?
The first. Going down metallicity decreases.
Why thermal stability of alkali metal hydride decreases down the group?
As the size of alkali metals increases down the group the M-H bond becomes weaker hence its stability decreases from LiH to CsH
Why Thermal stability increases when going down the group?
as metallic nature decreses
What Explain what happens to the average kinetic energy, thermal energy, and temperature of a substance when the particles in the substance slow down.?
The particles in a substance slow down when the average kinetic energy of the particles decreases. As the average kinetic energy decreases, the internal energy decreases, and so the thermal energy decreases. As the thermal energy of the substance decreases, the temperature decreases.
Why hydration energy decreases down the group in periodic table?
In fact it increases down the group because ionization energy decreases down the group
How does the electro negativity change as you move down a group in the periodic table?
As we move down a group, electronegativity decreases.
Which trend decreases for metals down a group?
Melting Point
Why the solubility of alkaline earth metals decrease down the group?
because down the group the cation becomes gets larger so the hydration energy decreases. so the solubility decreases
What do carbonates become more stable to thermal decomposition as they go down group 2?
The size of the group 2 ions gets bigger as we go down the group. Hence, their polarising power also decreases. So, the carbonates are less polarised as we go down the group, requiring more energy to decompose them. Polarising power is the ability of the ion to attract the bonding pair of electrons towards itself.
Electro chemical series down the group increases or decreases?
It increases
What increases down a group and decreases across a period?
Atomic radius
As the elements in Group 17 are considered in order of increasing atomic number the chemical reactivity of each successive element decreases increases or remains the same?
The chemical reactivity decreases in group 17 as you go down the group.
How chemically active are halogens?
Very, tho reactivity decreases down the group
