A lab creates a new element named Elementy McFacium. The element is created ionized with 182 protons and 180 electrons. The nucleus also holds 226 neutrons. What is the change of the ion? (Answer in multiples of the fundamental charge)

The isotope of Curium 242Cm has a half-life of 160 days and emits alpha particles with an energy 6.1 MeV. What is the initial power emitted by a sample of 242 Cm with a starting number of No = 10¹8 atoms? Select one: a. 49 mW. O b. 15.6 W. O c. O d. 308 kW. 2.7 W.

When a nucleus undergoes beta decay,  A. its mass number decreases by 2. B. its atomic number increases by 1. C. It emits a proton D. It emits a high energy photon

Q3: The table shows two isotopes of potassium and two isotopes of calcium. Type of emission Mass of neutral atom / u Number of electrons Number of protons Number of neutrons Total mass/u Mass defect/ u Binding energy / J Mass of the electron = 0.000549 u Mass of the proton = 1.007276 u Mass of the neutron = 1.008665 u TI ***** LEG 39K Stable 38.96371 SE nda 42K ß decay a) Use data about potassium-42 to explain the concept of mass defect. 3000 41.9624 19 19 23 42.34797 0.38557 5.76 x 10-11 De RAP 39 Ca ßt decay 38.9707 440 **** ****** D 42 Ca stable 41.95863

An unknown element X has the following isotopes: ⁶⁴X (49.00% abundant), ⁶⁶X (28.00% abundant), ⁶⁸X (23.00% abundant). What is the average atomic mass in amu of X?

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Question 13 What is the nuclear equation for 22 Ra (alpha decay) a. Ra → Po+ ¿He 88 224p b. Ra → 2Rn + He 224 88 220 86 c. Ra → Rn + ¿He 224 88 d. 2Ra → 28TH + ¿He 224 O a O b Previous