Sih4 draw the molecule by placing atoms on the grid and connecting them with bonds. do not identify the charge on each of these species. include all lone pairs of electrons. to change the symbol of an atom, double-click on the atom and enter the letter of the new atom. +- chonspfbrclixmore

Attached image of the Lewis structure.

Explanation:

To draw the Lewis structure of SiH₄, we need to consider the octet rule: atoms gain, lose or share electrons to have 8 electrons in their valence shell. H is an exception to this rule because it is completed with 2 electrons (duet).

Si is a semimetal and H a nonmetal, and they form covalent bonds, that is, they share pairs of electrons to be complete.

Si has 4 valence electrons, so it forms 4 covalent bonds to reach the octet.

Each H has 1 valence electron, so each H forms 1 covalent bond to reach the duet.

The resulting structure can be seen in the attached picture.

when atmosphere interacts with biosphere they focuses on on the sources and sinks of green house gases (ghgs) air pollutants, particular matters, water and energy between the earth's surface and the atmosphere. the biosphere affects the climate. the atmosphere and biosphere are in constant interaction with each other, and all living things rely on gases in the atmosphere for life. organisms such as animals take in oxygen gas form the atmosphere to use in every cell of their body for smooth functioning of daily routine exercises.

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying