Answer is: d. a lower melting point and boiling point.
Alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.
Bond between these elements is metallic bond.
Both the melting and boiling points decrease down the group 1, because the decrease in the strength of each metallic bond.
From top to bottom, atomic radius increase and the distance between the nucleus and delocalized electrons increases, so metallic bond is weaker (attractions fall).
Metallic bond is formed between electrons and positively charged metal ions.
Explanation:
2 H2O 2 → 2H 2 O + O2.........
Answer:
602200000000000000000000
Explanation:
move the decimal place over 23 places to the right
The energy that is
essential to break one C-H bond is 414 kJ/mol. Since, there are four C-H bonds
in CH4, the energy Δ HCH4 for
breaking all the bonds is calculated as Δ HCH4 = 4 x bond energy of C-H bond. By
multiplying the 4 with the 414 kJ/mol you can get the answer of 1656 kJ/mol CH4
molecules.
Answer:
A liquid
Explanation:
This is the answer!! Hope this helps.
