(pt) Which is the correct electron configuration for Silicon? 1s22s? 35' 2p 3p?
A
1s 2s 2p 3s 3p
В
C) 1s 2s22p2352 3p?
(D) 152 282 2p 3s 3p6

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt