A newly discovered element lenium (Le) was determined to belong to group 16. What would be the molecular geometry of LeoCl₂, knowing that this compound has one central atom? Select one: a. Trigonal bipyramidal O b. Tetrahedral O c. Trigonal planar O d. Trigonal pyramidal

Q: c) Ce chemPad Help XaX 1L Greek (d) Mg chemPad O Help X.X"→= Greek (e) Re chemPad O Help Greek -

A: elements are the pure form.

Q: Complete boxes

A:

Q: 5.6 x 1012 is .. .... Small than 1 O Larger than 1 60,900,000 is equal to 6.9 x 10° О 6.09 х 10°…

A: We know 10 to the power something minus is a verry small number if the multiplier is not a large…

Q: what are coinage metals?

A: Coinage metals are group of three transition metals of group 11 of periodic table.  The coinage…

Q: magnesium + oxygen → magnesium oxide List two physical / chemical properties for each compound

A: Physical properties are properties of substance that can be determined without changing substance's…

Q: Collaboration is not important in the pursuit of science. O True O False

A: The intellectual and practical activity encompassing the systematic study of the structure and…

Q: Li(ag) + K*I (aq) 14 - Lit' (aq) + K(aq) Ba(aq) + Ca+2 → Ba*2 (aq) + Ca(aq) (aq) Al(aq) + Mg*2 →…

A:

Q: 843 nm to m

A: Introduction- Conversion factor from nanometer(nm) to meter(m) is as follows- 1nm = 10-9m 10nm =…

Q: The measured melting point for each of two samples was 89-91 ˚C, yet a 1:1 mixture of the two had a…

A: Each compound has a unique set od physical and chemical properties that it exhibits its pure state.…

Q: millimeters meters centimeters 96.1 12.6 61.5

A:

Q: For the graph shown below: 45 40 35 30 25 20 15 10 5 FA 8. 10 What are the coordinates of point B:…

A: Solution is given on page as below

Q: Examples of Conductivity meters

A: A conductivity meter measures conductance by means of electronics connected to a sensor  immersed in…

Q: Which of the following are chemical changes?         mold Distillation of Salt Water Cutting Fabric…

A: In chemical changes two or more substances combine to obtain a new substance which is totally…

Q: ᴅɪʀᴇᴄᴛɪᴏɴꜱ: ᴅʀᴀᴡ ʟᴇᴡɪꜱ ꜱᴛʀᴜᴄᴛᴜʀᴇꜱ, ɴᴀᴍᴇ ꜱʜᴀᴘᴇꜱ, ᴀɴᴅ ɪɴᴅɪᴄᴀᴛᴇ ᴛʜᴇ ᴘᴏʟᴀʀɪᴛʏ ᴏꜰ ᴛʜᴇ ꜰᴏʟʟᴏᴡɪɴɢ…

A: Molecular geometry of the molecule gives shape of the molecule. If molecular geometry is symmetrical…

Q: An irregular sample of zinc has a mass of 23.21 g. This sample is carefully placed in a graduated…

A: Given data : Mass of zinc (mZn)= 23.21 g The initial volume of water (Vw)= 18.75 mL Density of zinc…

Q: What is the characteristic that distinguishes metals from one another?

A: The characteristics that distinguishes metals from one another is  malleability, ductility,…

Q: how do you convert 50 microliters to dekaliters using dimensional analysis

A:

Q: Questions: 1. Write the transition metals that you tested in order from 2. Find copper, iron, and…

A: 1) Osmium is most dense transition metal with density of approx 22.59g/cm³c Whereas scandium has the…

Q: mportance of forensic chemist

A: The process of applying scientific expertise in the field of chemistry to solve crimes is known as…

Q: 17. You have 41 mL L of graduated cylinder, it now reads 77 mL. What is the volume of the pebble?

A: Initial water level=41mL Water level after dropping pebble=77mL

Q: 19 Which of the following most accurately models the relationship between compounds and elements? A…

A: Given: 19. Models to determine the relationship between elements and compounds.

Q: CI + Nal

A: We need to find the product of this substitution reaction.SN1 substitution is a type of nucleophilic…

Q: a. I b. II c. III d. IV CH₂N₂ ????? I II III IV N₂ CH₂

A: The question is based on organic reactions.We need to identify the product and explain its…

Q: Na al y

A: The reactions given are,

Q: In an experiment, calcium carbonate reacted with different volumes of hydrochloric acid in water.…

A: Calcium carbonate reacts with hydrochloric acid to form the carbon dioxide gas.

Q: Is melting point reported as a range or a single temperature? What is the relationship between…

A: The melting point of a compound is the temperature at which its solid form starts to convert to…

Q: What material is a better shield? (assume they have the same thickness) a. copper (d = 9.0 g/cm3)…

A: Metals possess definite density value that signifies mass of unit volume. These values are denoted…

Q: N. CI

A: The given target imine can be formed by the reaction of propylamine and tetralone. Breaking of…

Q: What are advanced materials? Explain

A: Definition: Advanced materials are the materials which haven't been used in usual purposes, which…

Q: The density of a metal will vary depending on the size of the sample. Group of answer choices True…

A: False,  The density does not change with variation in size of metal. This is because with decrease…

Q: 4. 17 dm – cm 5. 299 W → TW

A: Consider the given conversion is as follows; 17 dm → cm 299 W → TW

Q: The first box is the key. The second box represents.... 00 00 00 00 00 0 00 OO OO Atom Y: O Atom Z:…

A: Pure substances are those substances which are made up of only one type of elements. These cannot be…

Q: Question 11: You are a gemstone expert studying samples of various materials. Gemstone Hambergite…

A: From the given gemstones, the most massive gemstone is = Smoky Quartz (density = 2.65 g/mL) The…

Q: Suggest 5 topics of educational research for chemistry students

A: Advanced water treatment, water reuse  and challenges faced during process.       May be research…

Q: 5. Which process is used to separate the compounds in crude oil O Distillation O Fractional…

A: Distillation is a process of heating a liquid to covert it into vapors and then condensing the…

Q: 3. Chromium forms a body centered cubic crystal. If the length of an edge is 2.884 angstroms,…

A: Chromium forms a body-centered cubic crystal. The edge length of a unit cell of Cr is provided as…

Q: Which one is the most common method used for the purification of liquid mixtures?

A: The mixture of liquid can be separated by different methods into pure liquids.

Q: Which of the following can be more completely broken down? a) Petrochemicals b) Metals c)…

A: Among the given options, Petrochemical = does not break completely. Metals = does not break.…

Q: ABCDE A. B. D. E. A A B B D D © C E 1. Br2, CC14 1. H₂, Lindlar's cat.; E 1. Br2, CC14 1. Na,…

A:

Q: Luminosity is measure by Kelvin O True O False

A: In a unit time,the elecromagnetic radiation emitted by the star galaxy etc ,is called luminosity and…

Q: 6. What is the difference between ACCURACY and PRECISION?

A: Accuracy:The measurement of how close the calculated value to the standard value is said to be…

Q: What is km mL^-1

A: For the meaning of   Km mL-1  Where, the symbols have their usual meaning.  As,     Km stands for…

Q: write the condensed formula for this

A:

Q: Four research teams measured the density of a new alloy, and what each team wrote in its team…

A:

Q: A peptide bond (also called an amide bond) joins two amino acids together. What atoms are linked by…

A:

Q: A B D B Bu с NaOH D E

A: Strong base react with alpha hydrogen containing carbonyl compound to give an enolate ion is as…

Q: Which of the following alkenes is the most stable? 0

A: Stability of an alkene depends on several factors (1) Alkenes which are attached to a greater number…

Group 14 Elements

The following elements come under group 14 of the periodic table.