Answer:
Explanation:
Given elements:
Sodium
Fluorine
The ion Na⁺ is made up of 10 electrons, its electronic configuration is:
1s² 2s² 2p⁶
Ion F⁻ is made up of 10 electrons, its electronic configuration is:
1s² 2s² 2p⁶
These ions do not form +2 because they cannot attain stability by losing or gaining two electrons.
Sodium atom is made up of one valence electron. If it loses one electron, it will be isoelectronic with Neon.
Fluorine has 7 valence electrons, to attain stability, it must gain one electron to form an octet. This way it will be isoelectronic with Neon.
Losing or gaining two electrons will not make the elements attain stability.
I can describe one prop. of energy: it can not be created or destroyed. It can be transferred, or converted, though.
Answer:
Through the processes of melting of the glacier to form water, evaporation of water, condensation and precipitation, water in the form of melting glaciers in Greenland could have moved to the Loch Raven Reservoir and on to our school's water fountain.
Explanation:
Considering a glacier in Greenland. When this glacier melts, its waters flows into the ocean. Subsequent heating of the ocean by sun causes the water to evaporate and rise into the sky as water vapor. This water vapor cools on rising and then condenses into water droplets in sky which forming clouds. A cloud is made of water drops or ice crystals floating in the sky.
Wind movement would then carry the clouds over great distances. These water droplets within a cloud will condense onto one another, causing the droplets to grow. When these water droplets become too heavy to remain suspended in the cloud, they will then either precipitate as rain or snow on land, rivers and oceans.
Over time, with continuous cycling and repetition of these processes, water melting from a glacier in Greenland will eventually make its way into the Big Gunpowder Falls river which feeds the Loch Raven Reservoir in Baltimore and subsequently, the water will be supplied to our school's water fountain.
Answer:
5 feet 6 inches is the optimal height for a human
