|1 Crore+ students have signed up on EduRev. Have you?|
Which of the following property regarding metal is correct?
A substance composed of two or more metals is called:
Which one of the following is a non metal?
A metal which melts on the palm:
The element gallium is an unexpected metal—it's a soft, silvery-white metal that is solid at room temperature (similar to aluminum) but it can literally melt in the palm of your hand.
A metal which is a poor conductor of heat:
Lead has less metallic character, so it is a poor conductor of heat. Lead lies in group 14 of the modern periodic table. metallic characters decrease, as we move left to right in the periodic table. Metals are usually the best conductors of thermal energy. This is due to the way that metals are chemically bonded: metallic bonds (as opposed to covalent or ionic bonds) have free-moving electrons which are able to transfer thermal energy rapidly through the metal. Lead lacks this kind of electrons so it's a poor conductor of heat. But compared to non-metal it's conductivity is quite higher.
The most abundant element in the universe is