How many electrons does each of the following elements have in its outermost electron-shell?
The elements of the periodic table are organized into groups that are based on the number of outer-shell electrons each element has. For example, an element in group 1A has one outer-shell electron, and an element in group 5A has five outer-shell electrons. To find the number of outer-shell electrons for a given element, use the periodic table to locate its group.
(a) Magnesium (group 2A) has two electrons in its outermost shell.
(b) Molybdenum is a transition metal, which has two electrons in the 4s subshell, plus four electrons in its 3d subshell.
(c) Selenium (group 6A) has six electrons in its outermost shell.
These also might be your questions
- What are likely formulas for the following substances?
- What is inductive effect?
- Why organic compounds show polarity?
- Why can’t an organic molecule have the formula C2H7?
- ORGANIC CHEMISTRY (MCMURRY 7TH) Ch1 P 1.1
- Write line-bond structures for the following substances, showing all nonbonding electrons
- Molecule of chloroform, using solid, wedged, and dashed lines to show its tetrahedral geometry.
- Draw a line-bond structure for propane, Predict the value of each bond angle, and indicate the overall shape of the molecule.
- Convert the following representation of ethane,into a conventional drawing that uses solid, wedged, and dashed lines to indicate tetrahedral geometry around each carbon
- Why aqueous aminoethane is a basic solution?
- What happens when ethanol mixed to water?
- Some info about S.I. units
- Chapter 1, Problem 1.18 General Chemistry- 7th Edition, Raymond Chang
- How can we understand the reflection of light by a metal surface?
- Chapter 1, Problem 1.19 General Chemistry- 7th Edition, Raymond Chang