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)
Atoms form chemical bonds to make their outer electron shells more stable
Answer:Na2S04 + HCl gives
NaCl + H2So4
Explanation:
Displacement reaction
Global warming can change weather PATTERNS.
intense heat waves and droughts
•FAMINE
•FOREST FIRES
powerful rain and snow STORMS
•FLOODING?? (could possibly be hurricane)
•Water borne and insect borne DISEASE
Increased HURRICANE (could possibly be flooding) and tornadoes DESTRUCTION of homes, ecosystems, and death.
I tried lol good luck though.
Answer:
Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time. For example, primary succession may take place following the eruption of volcanoes, such as those on the Big Island of Hawaii. As lava flows into the ocean, new rock is formed.
Explanation: