The atomic number of an element is 12. based on its electron arrangement, which of the following explains its correct position in the periodic table?
a)group 3, because it has two electrons in the 3p orbital.
b)group 2, because it has two electrons in the 3p orbital.
c)group 3, because its last electron is in the 3p orbital.
d)group 2, because its last electron is in the 2p orbital.
Answers: 3
Chemistry, 21.06.2019 23:10
Which statement describes both homogeneous mixtures and heterogeneous mixtures?
Answers: 1
Chemistry, 22.06.2019 04:00
Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?
Answers: 3
Chemistry, 22.06.2019 07:30
The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.
Answers: 1
The atomic number of an element is 12. based on its electron arrangement, which of the following exp...
Social Studies, 18.11.2020 07:50
Biology, 18.11.2020 07:50
Mathematics, 18.11.2020 07:50
English, 18.11.2020 07:50
English, 18.11.2020 07:50
Mathematics, 18.11.2020 07:50
Biology, 18.11.2020 07:50
Mathematics, 18.11.2020 07:50
Mathematics, 18.11.2020 07:50
Geography, 18.11.2020 07:50
Law, 18.11.2020 07:50