If the density of a BCC metal is 8.95 g/cm3, determine its atomic weight if its radius is 0.30 nm

As you move down a family (group) of the periodic table the size of atoms increases from period 2 to period 3 by about 30-40 pm.  For example, the radius of B is 84 pm and the radius of Al is 121 pm.  However, as you move from aluminum (radius of 121 pm) to gallium (radius of 122 pm) the radius only increases by 1 pm.  Which of the following explains this small increase in radius from Al to Ga? Select one: a. the scandide contraction b. the lanthanide contraction c. the mercurate elongation d. the zincate elongation e. Aluminum is just larger than you might expect.

What is the edge length (in cmcm) of a titanium cube that contains 2.41×10242.41×1024 titanium atoms?

9.Which of the following elements is in Group 6B?   a, Cs b, Po c, O d, Mo 10,Which of the following elements is in Period 4?   Group of answer choices   a, In b, Sr c, Sn d, Ga 11, Which of the following statements is incorrect? a, Strontium is an alkaline earth metal. b, Sodium is an alkali metal. c, Indium is a transition metal d, Neon is a noble gas.

Calculate the radius in nanometers of a metallic atom given that it has a BCC structure and a density of 12.51 g/cm3 and an atomic weight of 101.33 g/mol. NA = 6.022 x 1023 atoms/mol. Express your answer in three decimal places

Hi, can someone pls tell me if these answers are correct and help me find the answers to the ones I didn't know, thanks ?

A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar System. Mass-spectroscopic analysis produced the following data on the isotopes of molybdenum in these samples: mass relative isotope (amu) abundance 92 Mo 91.91 98,8% Mo 96.91 1.2% Use these measurements to complete the entry for molybdenum in the Periodic Table that would be used on 98765 ALEKS. Round your entry for the atomic mass to 3 significant digits. Caution: your correct answer will have the same format but not necessarily the same numbers as the entry for molybdenum in the Periodic Table we use here on Earth. Mo 国 国

The diameter of a US penny is 19 mm. The diameter of a silver atom, by comparison, is only 2.88 Å. How many silver atoms could be arranged side by side in a straight line across the diameter of a penny? (10^10 Å = 1 m)

4. Identify the Z + 8 element for Si.

A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar System. Mass-spectroscopic analysis produced the following data on the isotopes of ruthenium in these samples: isotope 101 Ru 102 Ru mass relative (amu) abundance 100.9 53.% Use these measurements to complete the entry for ruthenium in the Periodic Table that would be used on 98765 ALEKS. Be sure your answers have the correct number of significant digits. Ru 0 101.9 47.% Caution: your correct answer will have the same format but not necessarily the same numbers as the entry for ruthenium in the Periodic Table we use here on Earth. Explanation X Check S zzz mcGraw Hill LLC. All Rights Reserved. Terms of Use ? ol Privacy Center | Accessibil