Chemistry, 30.07.2019 11:50 aubreystechschu11331
Calcium (atomic number 20) has electron configuration 1s2,2s2,2p6,3s2,3p6,4s2. the atomic number of scandium is 21. which orbital does the 21st electron enter? a) 3d b) 4p c) 4d d) 4f
Answers: 1
Chemistry, 22.06.2019 14:10
13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.
Answers: 1
Chemistry, 22.06.2019 16:50
Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
Answers: 1
Chemistry, 23.06.2019 00:30
An unknown insoluble substance displaced the water shown. it's mass is indicated on the triple beam balance. mass = a. 694 b. 693.5 c. 693.0 d.693.8
Answers: 1
Calcium (atomic number 20) has electron configuration 1s2,2s2,2p6,3s2,3p6,4s2. the atomic number of...
Physics, 20.09.2021 15:30
Mathematics, 20.09.2021 15:30
Mathematics, 20.09.2021 15:30
Spanish, 20.09.2021 15:30
Spanish, 20.09.2021 15:30
Computers and Technology, 20.09.2021 15:30
Mathematics, 20.09.2021 15:30
English, 20.09.2021 15:30
History, 20.09.2021 15:30