Calcium belongs to the alkaline earth metal group. Within a group, the melting point decreases from top to bottom. This is because the as the atomic radii increases the outer valence electrons are shielded by the inner electrons and experience a lower nuclear attraction. As a result the bonds can be broken easily which lowers their melting point.
The three elements below Calcium ib Group II A which have a lower melting point are: Strontium (Sr), Barium (Ba) and Radium (Ra)
Environmental conditions
Explanation:
Traits that are due to environmental conditions are considered to be acquired traits. This kind of trait are not coded in the DNA and passed down as inherited traits.
- A larger body muscle due to regular exercise and fitness training is an acquired trait.
- Skin color most times are inherited.
- Acquired traits are typically conditioned due to the environment an organism finds itself.
- These traits cannot be passed down.
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Answer: Electrons have a negative charge
The filtration process is generally used to separate a suspension mixture where small solid particles are suspended in liquid or air. ... The water that has been run through the filter is called the filtrate. The particles that are removed from the water by the filter are called the residue
