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Sodium metal is soft with low melting point and low heat of fusion because metallic bond is week. Sodium metal has 1 valence electron per atom,
THE METALLIC BOND IS WEEK therefore it is not very strong so, SODIUM METAL IS SOFT..
OTHER metals are hard because they have strong metallic bonding,
These metals have high melting point because they have incomplete valence shell ,
As a result strong covalent bond between atom extends through out the crystals so,
THEY'RE HARD METALS.
(ANSWER FROM TAZEEM HAJRA)
Wiki User
∙ 9y ago
Wiki User
∙ 16y agoThere are different properties of each element that make them all different. Hardness and softness are one of the physical properties.
Wiki User
∙ 15y agoThe hardness of a mineral is reliant on its chemical composition and crystalline structure. The type of atomic bonding between elements comprising the crystal is the most important factor.
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Is it hard or soft?
well It Is hard because all rocks are hard
Is metamorphic rock soft or hard?
There are types of igneous rocks that are hard (eg granite) and others that are soft (eg volcanic ash). There are types of metamorphic rocks that are hard (eg gneiss) and others that are soft (eg marble). Thus "hardness" is not a characteristic that can be used to distinguish between the two.
Are igneous rocks smooth?
They may be smooth and others may be rough. Smoothness/roughness is not a defining characteristic for igneous rocks.
What characteristic do rocks have?
These are some characteristics which are used to help identify rocks: fracture, color, hardness, tenacity, texture, strata, banding, color, resistance to acids, and weight.
What is used to determine weather water is soft or hard?
lake water is soft we have some by are cottage which we swim in the seaweed and smooth rocks help it to be soft i have to say interesting question
What are the hard and soft matrix used in Impregnated diamond core bit - I'm confused about the fact that a hard matrix is used in sedimentary or soft rocks while a soft matrix is used for hard rocks?
Hard matrix is supposed to be used for digging hard rocks and soft matrix for soft rocks. It's quite confusing to me
Is it hard or soft?
well It Is hard because all rocks are hard
Is igneous rock generally soft or hard rock?
Igneous rock is considered "hard" rock by geologists due to its interlocking crystalline structure.
Is limestone rock hard or soft?
Generally speaking, when a geologist talks of "soft rocks" and "hard rocks" what he or she means is "sedimentary rocks" or "igneous and metamorphic rocks". Limestone is a sedimentary rock, and compared to most other rocks, is relatively soft. lol Different limestones have different hardnesses. Most "marbles" are actually hard limestones, because they have not experienced the high pressures and temperatures required for metamorphism.
Is sandstone a soft or hard rock?
compared to most rocks sandstone is rather soft and brittle, but the hardness of it varies greatly from rock to rock, some sandstone is so soft it can be crushed by stamping on it while other sandstone is so hard it can be used to build buildings
Is metamorphic rock soft or hard?
There are types of igneous rocks that are hard (eg granite) and others that are soft (eg volcanic ash). There are types of metamorphic rocks that are hard (eg gneiss) and others that are soft (eg marble). Thus "hardness" is not a characteristic that can be used to distinguish between the two.
Can minerals or rocks can be soft or hard?
well,the world may never know
Are igneous rocks smooth?
They may be smooth and others may be rough. Smoothness/roughness is not a defining characteristic for igneous rocks.
What characteristic do rocks?
The Characteristics are hard,soft,smooth,rough,large,small,etc.
Are rocks formed due to thermal metamorphism soft or hard?
Rocks formed from thermal metamorphism are very hard. An example is hornfels. Just search thermal metamorphism and/or hornfels and you'll see some nice explanations on the web.
Is metamorphic rock generally soft rock or hard rock?
Comparatively hard, due to larger interlocking crystals and a higher density than most igneous/sedimentary rocks
Is metal a hard substance?
No. Some metals are hard, but some are soft.
