GK
ELEMENTS COMPOUNDS SUBSTANCES METALS AND NON METALS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
10
|
|
|
11
|
|
|
12
|
|
|
13
|
Detailed explanation-1: -Five non-metals are solids at room temperature: iodine, carbon, phosphorous, sulfur and selenium. One non-metal is a liquid. The other 11 non-metals exist as gases at room temperature.
Detailed explanation-2: -10 non-metals are solids: Important solid non-metals are: Boron (B), Carbon (C), Silicon (Si), Phosphorus (P), Arsenic (As), Sulphur (S), Iodine (I).
Detailed explanation-3: -Non-metals are those which lack all the metallic attributes. They are good insulators of heat and electricity. They are mostly gases and sometimes liquid. Some they are even solid at room temperature like, Carbon, sulfur and phosphorus.
Detailed explanation-4: -The elements that are present in gaseous state are hydrogen, helium, nitrogen, oxygen, fluorine, neon, chlorine, argon, krypton, xenon and radon.
Detailed explanation-5: -Hydrogen, carbon, nitrogen, oxygen, phosphorus, arsenic and selenium are the non-metallic elements in the periodic table.