Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Columns in the periodic table are called groups, and the rows are called periods. Notice that the groups are labeled 1 to 18 and the periods are labeled 1 to 7. Groups 1, 2, and 13 to 18 are called the main group elements, groups 3 to 12 are the transition elements, and the bottom two rows are called the lanthanides and actinides, respectively.
This table gives properties and alternate names for some of the groups:
Group Name Properties1 Alkali metals React to form 1+ ions.2 Alkaline earths React to form 2+ ions.17 Halogens React to form 1 ions.18 Rare gases(noble gases) Stable and unreactive. (Elements from othergroups form ions to achieve the same numberof electrons as a noble gas.)
i) What is the atomic number of the element located in group 16, period 2 of the periodic table? Enter the atomic number.
ii) If a new element were discovered and it was found to form 1 ions, in which group would you place it in the periodic table? Enter the group number.
In the qualitative analysis of antimony, please assist with net ionic equations for Sb3+ with thioacetamide, Sb2S3 with NaOH, Sb2S3 with conc. HCL, and SBCl6- with H2C2O4 and thioacetamide.
Calculate the pH of the solution after a)10.0mL b)20.0mL c)30.0 mL of acid have been added; pkb of (CH3)3N=4.19 at 25 degree celcius.
An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the temperature was 295 K, and the volume of hydrogen gas collected was 35.6 mL. The calculated value of R was 82.1mL atm K-1..
A sample of gaseous C2H2 (acetylene, or ethyne) was stored for one year, yet at the end of this period the sample remained unchanged and no graphite or hydrogen gas had been formed. Briefly explain why there is no inconsistency between the sign of..
Fission of one mole of U-235 releases 1.9 x 1010 kJ. Calculate the number of kg of coal needed to produce the same amount of energy as the fission of 1 kg of U-235 (235.05g/mol)
Arrange the following solutions in order of decreasing freezing point: 0.10m Na3PO4; 0.35m NaCl; 0.20m MgCl2; 0.15m C6H12O6; 0.15m CH3COOH
Calculate the standard cell potential for Mg(s) + Fe2+(aq)--->Mg2+ + Fe(s) Express the standard potential numerically in volts.
balanced oxidation half reaction and balanced reduction half reaction?
calculate the mass loss on heating 1.200 g of a NaHCO3-NaCl mixture containing 65% NaCl
how to predict whether a precipitate reaction will occur when aqueous solutions of PbCl2 and (NH4)2S are mixed.
What is the [t-BuCl], in M, when bromophenol blue changes color. Given this data, what will the kinetic equation (x-kt) be for this data. If 787 sec were required for the bromophenol blue color to change, then calculate
calcium hydride cah2 reacts with water to form hydrogen gas.cah2s 2 h2ol caoh2aq 2 h2gthis reaction is sometimes used
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd