Electron shell - Study guides, Class notes & Summaries

Chapter 01 - Structure and Bonding 1. Give the ground-state electron configuration for carbon (atomic number 6). 1s22s22px12py1 or 1s22s22p2 2. Give the ground-state electron configuration for fluorine (atomic number 9). ANSWER: POINTS: 1 1s22s22px2 2py2 2pz1 or 1s22s22p5 3. Give the ground-state electron configuration for magnesium (atomic number 12). 1s22s22p63s2 4. How many electrons does silicon have in its valence shell? ANSWER: four POINTS: 1 Exhibit 1-1 Write valid Lewis (elec...

Portage Microbiology Exam #3 Questions With 100% Correct Answers What is the total magnification of a sample imaged with a 60x objective and a 10x eyepiece? (short answer) - answer60 x 10 = 600x magnification True or False: A cell that is adherent, flat, and unstained is easily identified using bright field microscopy - answerFalse. Adherent, flat cells are almost invisible due to the limits on both resolution and contrast Which of the following could be seen clearly by the unaided eye? (...

20 milliamperes is the same as ________. (Remember, 1 milliampere = 0.001 ampere.) - Answer 0.02 amperes The orbital shell that has a maximum electron capacity of 18 electrons is the ___________ shell. - Answer Third A semiconductor material - Answer Has four valence electrons. The major factor for determining whether a particular element is a conductor, a semiconductor, or an insulator is - Answer The number of electrons in the valence shell. Elements that are called conductors - Answer ...

Adaptation- - correct answersThe adjustment or changes in behavior, physiology, and structure of an organism to become more suited to an environment. Aerobic- - correct answersA process that requires oxygen. Allele -An alternative form of a gene. An example would be genes that encode eye color—some encode blue eyes (one allele), while others encode brown, green, or hazel eye colors (other alleles). - correct answers amino acids - - correct answersA small organic molecule with the stru...

describe the basic functions all life forms must accomplish -response to environmental stimuli & maintain homeostasis -uptake and processing of nutrients/energy -regulation -growth and reproduction compare and contrast eukaryotic and prokaryotic cell types Prokaryotes: -circular chromosomes, no nucleus, no organelles, 3.5 bya -DNA concentrated in nucleoid Eukaryotes: -linear chromosomes, nucleus, organelles, 1.5 bya -DNA concentrated in nucleus Both: -cellular function takes p...

A SUBATOMIC PARTICLE HAS A NEGATIVE CHARGE AND IS FOUND IN A SHELL OF THE ATOM. WHAT IS THE PARTICLE? - AN ELECTRON MALE PEACOCKS COMPETE WITH ONE ANOTHER TO MATE FEMALE PEACOCKS. MALES WITH MORE COLORFUL TAIL FEATHERS ATTRACT FEMALE MATES AT A HIGHER RATE THAN THOSE W/O. THEREFORE MALE PEACOCKS HAVE COLORFUL TAIL FEATHERS, WHEREAS FEMALE PEACOCKS DO NOT. WHAT IS THIS AN EXAMPLE OF? - SEXUAL SELECTION A GARDENER MAINTAINS A SPECIES OF ROSE THAT PRODUCD EITHER YELLO FLOWERS ( THE DOMINANT P...

Which subatomic particle is displaced when two or more atoms combine make a molecule? a. protons. b. neutrons. c. electrons. d. protons and neutrons. Correct Answer-electrons What type of bond is formed when atoms share electrons? a. ionic bond. b. covalent bond. c. hydrogen bond. d. ionic and covalent bond. Correct Answer-covalent bond What determines the number of covalent bonds an atom can create? a. the number of protons in its nucleus. b. the number of neutrons in its nucleu...

Biology 114 Exam 1 Questions and Answers 100% Pass What term describes anything that possesses mass and occupies space? Matter How do you refer to a substance that cannot be decomposed into simpler substances through chemical means? An element What do you call a substance made of at least two distinct elements combined in a specific ratio, regardless of the type of bond? A compound What fraction of the 92 naturally occurring elements are crucial for human existence? Betwee...

CHEMISTRY A LEVEL WITH SATISFIED SOLUTIONS What are the two elements which are exceptions to the electron configuration? - CORRECT-The two exceptions for this is copper and chromium. In both cases, the 4s subshell contains only one electron, even though there are electrons in the 3d subshell. To explain this, its because the 3d subshell is more stable when it is either half full, or completely full. So in the case of chromium, by having only one electron in the 4s subshell, ...

Chapter 9 Intro to Radiologic & Imaging Sciences & Patient Care _____________ _____________ is energy capable of penetrating matter and possesses sufficient energy to eject orbital electrons along its path - ionizing radiation The two basic sources of ionizing radiation exposure are ______________ radiation and ____________________ radiation sources. - natural and human-made The _____________ must outweigh the risks of any diagnostic study using ionizing radiation. - benefits Human-m...