Question

HOW CAN you reconigise the planets Venus mars saturn in the sky

Answer 1

You can distinguish them from their location and brightness. Venus is also known as morning and evening star. So, you will not find Venus near the zenith. It is located at certain angle above eastern or western horizon. However, Jupiter can be found anywhere near the eciliptic (path traced by the sun in the sky during the day). Also Venus is far brighter than Jupiter.

Answer 2

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octet rule: Atoms lose, gain, or share electrons in order to have a full valence shell of eight electrons. Hydrogen is an exception because it can hold a maximum of two electrons in its valence level.