![LuxTheGirl5214](/avatars/3048.jpg)
LuxTheGirl5214
02.10.2019 •
Chemistry
There is an element x ( atomic no. 19, atomic mass 40) (10) (a)what is its correct ground state orbital configuration (b) which group does it belongs to ? (c) which period does it belongs to (d) how many shells does it have ?
Solved
Show answers
More tips
- F Food and Cooking How to Make Delicious Cabbage Pies: The Best Recipes!...
- S Science and Technology The Metric System in Our Daily Life: Understanding Its Importance...
- H Health and Medicine Angina: Causes, Symptoms, and Treatment...
- C Computers and Internet How to Learn to Type Fast?...
- F Food and Cooking Delight for Gourmets: How to Prepare Liver Pate...
- S Style and Beauty How to braid friendship bracelets?...
- H Health and Medicine Mercury Thermometer Danger: What to do when a thermometer breaks?...
- F Food and Cooking Which Calamari Salad is the Most Delicious?...
- S Society and Politics 10 Tips for Boosting Your Self-Esteem...
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
Answers on questions: Chemistry
- C Chemistry you have 9.3 mL water in a bottle. The total mass of the full bottle is 5.3g and the empty bottle is 2.4g. What is the density of the liquid?...
- E English Please someone SLAM this for me! I will give you brainliest!...
- M Mathematics Suppose the sample space for a probability experiment has 8 elements. If elements from the sample are selected without replacement, how many different ways can...
- M Mathematics Which statement is true about the equations -3x + 4y 12 and #x - 4y = 1? . The system of the equations has exactly one solution at (-8, 3). O The system of the...
- C Chemistry 3.7 g of hexanoyl chloride (C6H11OCl) are dissolved in 50.0 g of benzene. What is the freezing point of this solution?...
Ответ:
a)![1s^22s^22p^63s^23p^64s^1](/tpl/images/0283/9774/3e673.png)
b) group no : 1
c) period no : 4
d) 4 shells
Explanation:
Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.
The electrons are filled according to Afbau's rule in order of increasing energies and thus the Electronic configuration for element X with atomic number of 19 and thus 19 electrons is:
b) The group for elements whose last electrons enter the s orbital is given by the number of electrons present in the valence s orbital. Thus the group number is 1.
c) The period of the element is given by the principal shell of the valence electron. Thus as last electron enters 4th main shell, the period number is 4.
d) The shells are given by the the value of principal quantum number and thus there are 4 values of principal quantum number i.e 1, 2 , 3 and 4 and thus there are 4 shells.
Ответ:
See the answer below
Explanation:
Since no fresh air is coming into the elevator while the people are still trapped in it, the breathing of the people will alter the composition of the air inside the lift.
Breathing involves taking-in of oxygen and the release of carbon dioxide. Hence, less and less oxygen will become available within the lift while the concentration of the carbon dioxide keeps increasing as time goes on.
If the people remain trapped for a long time, the oxygen composition of the air inside the elevator will become exhausted, the carbon dioxide concentration will increase, and the people will suffocate due to lack of oxygen.