Answer:
El Niño is associated with death and disease, most of which result from weather-related disasters such as floods and droughts. In 1997 Central Ecuador and Peru suffered rainfall more than 10 times normal, which caused flooding, extensive erosion and mudslides with loss of lives, destruction of homes and food supplies.
Pd has an
anomalous electron configuration. Write the observed electron configuration of
Pd.
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2
3d^10 4p^6 4d^10
The electron configuration
shown above is the original configuration of Pd. Here is the anomalous electron
configuration.
1s^2 2s^2 2p^6 3s^2 3p^6 3d^10
4s^2 4p^6 4d^10 or (Kr) 4d^10
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What are the statements? A chemical property is a characteristic of a particular substance that can be observed in a chemical reaction
8 valence electrons means that the element is stable. When we hear stable, we know the group to look at! Noble gases all have 8 valence electrons making them stable and have a full octet.
Here are some:-
Krypton
Argon
Neon
The answer in this question is FALSE. Hydrogen atom has electronic configuration 1s^1. It needs only one more electron to make a closed sub-shell. Therefore, a stable hydrogen atom does not have an octet but a duplet. Therefore, the statement is false.