User Account

All Pages

Atomic number of the element

Assignment Help Chemistry
Reference no: EM131634720

Question 1:  Atoms of two adjacent elements in the third period are in the ground state. An atom of element A has only s electrons in its valence shell. An atom of element B has at least one p electron in its valence shell. Identify elements A and B.

Question 2: What are the symbol, name, and atomic number of the element that has 21 protons in the nuclei of its atoms?

Reference no: EM131634720

Questions Cloud

Functional group present in both aldehydes and ketones : What is the functional group present in both aldehydes and ketones? (structure and name) do aldehydes and ketones give H bond? Explain
Discuss the deficits and investment : Deficits and investment: Suppose the government decides to reduce taxes today by 1% of GDP, financed by higher borrowing.
Different from the first exercise : However, average bond distances in C-C (non- aromatic) is different from the first exercise (1.538 Å). This is due to the hybridisation of C(4), C(7) and C(8).
What is the fiscal problem of the twenty-first century : To what extent is this fiscal problem driven by the Social Security program? By how much would taxes have to rise as a share of GDP in order.
Atomic number of the element : What are the symbol, name, and atomic number of the element that has 21 protons in the nuclei of its atoms?
What mass of unreacted nitrogen must remain : When 0.2250 g of magnesium is heated with 0.5331 g of nitrogen in a closed container, the magnesium iscompletely converted to 0.3114 g of magnesium nitride.
Why effective legislation does not exist : Question on Climate Change. Several barriers prevent effective climate change legislation.
Define alice agent is an employee of patti principal : Alice Agent is an employee of Patti Principal. She negligently runs a stop sign in the course of her employment and injures Bart Bikerider
Determine moment capacity and curvature using charts : Determine the following: The P-M interaction and the P-curvature diagram considering that: (a) no confinement of the compressive toe is used

Reviews

Write a Review

Chemistry Questions & Answers

  What mass of magnesium is required to produce

what mass of magnesium is required to produce enough gas to exert a partial pressure of .50 atm in a 50.0 mL flask at a temperature of 25.0 degrees celcius?

  Compute the molarity of the resulting solution

Calculate the molarity of the resulting solution if 0.126 grams of Hydrogen ion [H+] is dissolved in 250 mL of distilled water.

  How many moles of nitrogen gas will be formed

how many moles of nitrogen gas will be formed upon the complete reaction of 31.6 grams of nitrogen monoxide with excess hydrogen gas?

  Compute the radioactive heat gain in watts by a loaf

Compute the radioactive heat gain in watts by a loaf of bread at a surface temperature of 100 C. The surrounding oven surface temperature is1000 C. the total surface area of the bread is 0.15 m2 as well as the emissivity of the bread surface is 0...

  Find out the shortest frequency of light

Determine the shortest frequency of light required to remove an electron from a sample of Ti metal, if the binding energy of titanium is 3.14 x 103 kJ/mol.

  Explain what is the molar mass of a nonelectrolyte

Question- What is the molar mass of a nonelectrolyte if 6.02 grams dissolved in 30.0 grams of benzene freezes at -1.55 °C? The freezing point of pure benzene is 5.50 °C and the freezing point depression constant, Kfp, is -5.12 °C/m.

  Calculate the concentration of reactants and products

The equilibrium constant has a value of 0.30. Assume 0.20 mol of A and 0.50ml of B are dissolved in 1.00L and the reaction proceeds. Calculate the concentration of reactants and products at equilibrium

  Explain the extinction coefficient

A solution of a dye absorbs light of wavelength 480 nm, and for this absorption, the extinction coefficient is 18600 L/mol/cm. A sample of the dye of unknown concentration is placed in an optical cell of path length 1 cm

  Describe positive iodine-starch test

List five food product would give a positive iodine-starch test for carbohydrate mention somthing beside potato

  Explain what product favored reaction will occur

Predict what product favored reaction will occur when potassium metal is dropped into liquid water. Write a balanced chemical equation for the process and explain breifly how you made your predicition.

  Calculate molarity of a pottassium chloride solution

Calculate molarity of a KCl solution prepared by dissolving 0.525 moles of Kcl in 250. mL of water.

  The electronic structure of cadmium and indicate the group

Problem- Note the electronic structure of Cadmium (II) and indicate the group (type A, borderline, or type b) in which it should be placed. Predict the principal inorganic forms of the element in fresh and sea water under both oxidizing and reduci..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd