(a)
Interpretation:
Element
Concept Introduction:
Elements are arranged in Periodic table according to their
Periods are numbered from 1 to 7 and it is from top to bottom in Periodic table. Groups are numbered from left to right. The Group numbers are given as 1A, 2A, 3B to 8B, 1B, 2B, 3A to 8A.
The elements that are present in Group with A are known as representative elements while Group with B is known as
(b)
Interpretation:
Platinum is a representative element, transition element or an inner transition element has to be identified from its position in periodic table.
Concept Introduction:
Refer part (a).
(c)
Interpretation:
Rubidium is a representative element, transition element or an inner transition element has to be identified from its position in periodic table.
Concept Introduction:
Refer part (a).
(d)
Interpretation:
Element
Concept Introduction:
Refer part (a).
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Chemistry: Principles and Practice
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- (a) In the certain hydrated salt MSO3⋅4H2O, the mass percentage of H2O is 44.71%. Identify the element M in the salt? (b) A certain element has two naturally occurring isotopes. The mass of one of the isotopes is 120.904 amu and its natural abundance is 57.21%. The mass of the second isotope is 122.904 amu. Calculate the average atomic mass Write the chemical symbols of the isotopesarrow_forward(a) Atoms are very small compared to objects on the macroscopic scale. The radius of a vanadium atom is 131 pm. What is this value in meters and in centimeters? cm (b) The mass of a single vanadium atom is 8.46×10-23 g. Suppose enough V atoms were lined up like beads on a string to span a distance of 44.7 cm ( 18 atoms inches). How many atoms would be required? What mass in grams of V would be used? Could you weigh out this amount of vanadium using a typical laboratory balance? (c) Taking the density of vanadium metal to be 6.08 g/cm³, calculate the mass of metal needed to form a piece of V wire with the same length as the distance in b, but with a diameter of 1.00 mm. Hint: The volume of a cylinder is T times its radius squared times its height. (V = T r² h) How many vanadium atoms does this represent? atomsarrow_forwardAtoms of each of the following elements are essential for life. Give the group name for the following elements:(a) chlorine(b) calcium(c) sodium(d) sulfurarrow_forward
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